diff --git a/pylintrc b/pylintrc
index 5c86254c6..2aeb49278 100644
--- a/pylintrc
+++ b/pylintrc
@@ -2,6 +2,8 @@
 reports=no
 jobs=2
 
+good-names=id,i,j,k,ex,Run,_,fp,T
+
 # Reasons disabled:
 # format - handled by black
 # locally-disabled - it spams too much
diff --git a/supervisor/addons/addon.py b/supervisor/addons/addon.py
index 3de1bca93..9c14d47fb 100644
--- a/supervisor/addons/addon.py
+++ b/supervisor/addons/addon.py
@@ -71,9 +71,8 @@ class Addon(AddonModel):
 
     def __init__(self, coresys: CoreSys, slug: str):
         """Initialize data holder."""
-        self.coresys: CoreSys = coresys
+        super().__init__(coresys, slug)
         self.instance: DockerAddon = DockerAddon(coresys, self)
-        self.slug: str = slug
 
     async def load(self) -> None:
         """Async initialize of object."""
diff --git a/supervisor/addons/model.py b/supervisor/addons/model.py
index 4d4960a68..bd24feb37 100644
--- a/supervisor/addons/model.py
+++ b/supervisor/addons/model.py
@@ -65,7 +65,7 @@ from ..const import (
     SECURITY_PROFILE,
     AddonStages,
 )
-from ..coresys import CoreSysAttributes
+from ..coresys import CoreSys, CoreSysAttributes
 from .validate import RE_SERVICE, RE_VOLUME, schema_ui_options, validate_options
 
 Data = Dict[str, Any]
@@ -74,7 +74,10 @@ Data = Dict[str, Any]
 class AddonModel(CoreSysAttributes):
     """Add-on Data layout."""
 
-    slug: str = None
+    def __init__(self, coresys: CoreSys, slug: str):
+        """Initialize data holder."""
+        self.coresys: CoreSys = coresys
+        self.slug: str = slug
 
     @property
     def data(self) -> Data:
diff --git a/supervisor/coresys.py b/supervisor/coresys.py
index 7ebc6a300..3cf49bd58 100644
--- a/supervisor/coresys.py
+++ b/supervisor/coresys.py
@@ -2,7 +2,7 @@
 from __future__ import annotations
 
 import asyncio
-from typing import TYPE_CHECKING, Optional
+from typing import TYPE_CHECKING, Any, Callable, Coroutine, Optional, TypeVar
 
 import aiohttp
 
@@ -35,6 +35,9 @@ if TYPE_CHECKING:
     from .plugins import PluginManager
 
 
+T = TypeVar("T")
+
+
 class CoreSys:
     """Class that handle all shared data."""
 
@@ -82,6 +85,8 @@ class CoreSys:
     @property
     def dev(self) -> bool:
         """Return True if we run dev mode."""
+        if self._updater is None:
+            return False
         return self._updater.channel == UpdateChannels.DEV
 
     @property
@@ -127,10 +132,12 @@ class CoreSys:
     @property
     def core(self) -> Core:
         """Return core object."""
+        if self._core is None:
+            raise RuntimeError("Core not set!")
         return self._core
 
     @core.setter
-    def core(self, value: Core):
+    def core(self, value: Core) -> None:
         """Set a Core object."""
         if self._core:
             raise RuntimeError("Core already set!")
@@ -139,10 +146,12 @@ class CoreSys:
     @property
     def plugins(self) -> PluginManager:
         """Return PluginManager object."""
+        if self._plugins is None:
+            raise RuntimeError("PluginManager not set!")
         return self._plugins
 
     @plugins.setter
-    def plugins(self, value: PluginManager):
+    def plugins(self, value: PluginManager) -> None:
         """Set a PluginManager object."""
         if self._plugins:
             raise RuntimeError("PluginManager already set!")
@@ -151,10 +160,12 @@ class CoreSys:
     @property
     def arch(self) -> CpuArch:
         """Return CpuArch object."""
+        if self._arch is None:
+            raise RuntimeError("CpuArch not set!")
         return self._arch
 
     @arch.setter
-    def arch(self, value: CpuArch):
+    def arch(self, value: CpuArch) -> None:
         """Set a CpuArch object."""
         if self._arch:
             raise RuntimeError("CpuArch already set!")
@@ -163,10 +174,12 @@ class CoreSys:
     @property
     def auth(self) -> Auth:
         """Return Auth object."""
+        if self._auth is None:
+            raise RuntimeError("Auth not set!")
         return self._auth
 
     @auth.setter
-    def auth(self, value: Auth):
+    def auth(self, value: Auth) -> None:
         """Set a Auth object."""
         if self._auth:
             raise RuntimeError("Auth already set!")
@@ -175,10 +188,12 @@ class CoreSys:
     @property
     def homeassistant(self) -> HomeAssistant:
         """Return Home Assistant object."""
+        if self._homeassistant is None:
+            raise RuntimeError("Home Assistant not set!")
         return self._homeassistant
 
     @homeassistant.setter
-    def homeassistant(self, value: HomeAssistant):
+    def homeassistant(self, value: HomeAssistant) -> None:
         """Set a HomeAssistant object."""
         if self._homeassistant:
             raise RuntimeError("Home Assistant already set!")
@@ -187,10 +202,12 @@ class CoreSys:
     @property
     def supervisor(self) -> Supervisor:
         """Return Supervisor object."""
+        if self._supervisor is None:
+            raise RuntimeError("Supervisor not set!")
         return self._supervisor
 
     @supervisor.setter
-    def supervisor(self, value: Supervisor):
+    def supervisor(self, value: Supervisor) -> None:
         """Set a Supervisor object."""
         if self._supervisor:
             raise RuntimeError("Supervisor already set!")
@@ -199,10 +216,12 @@ class CoreSys:
     @property
     def api(self) -> RestAPI:
         """Return API object."""
+        if self._api is None:
+            raise RuntimeError("API not set!")
         return self._api
 
     @api.setter
-    def api(self, value: RestAPI):
+    def api(self, value: RestAPI) -> None:
         """Set an API object."""
         if self._api:
             raise RuntimeError("API already set!")
@@ -211,10 +230,12 @@ class CoreSys:
     @property
     def updater(self) -> Updater:
         """Return Updater object."""
+        if self._updater is None:
+            raise RuntimeError("Updater not set!")
         return self._updater
 
     @updater.setter
-    def updater(self, value: Updater):
+    def updater(self, value: Updater) -> None:
         """Set a Updater object."""
         if self._updater:
             raise RuntimeError("Updater already set!")
@@ -223,10 +244,12 @@ class CoreSys:
     @property
     def secrets(self) -> SecretsManager:
         """Return SecretsManager object."""
+        if self._secrets is None:
+            raise RuntimeError("SecretsManager not set!")
         return self._secrets
 
     @secrets.setter
-    def secrets(self, value: SecretsManager):
+    def secrets(self, value: SecretsManager) -> None:
         """Set a Updater object."""
         if self._secrets:
             raise RuntimeError("SecretsManager already set!")
@@ -235,10 +258,12 @@ class CoreSys:
     @property
     def addons(self) -> AddonManager:
         """Return AddonManager object."""
+        if self._addons is None:
+            raise RuntimeError("AddonManager not set!")
         return self._addons
 
     @addons.setter
-    def addons(self, value: AddonManager):
+    def addons(self, value: AddonManager) -> None:
         """Set a AddonManager object."""
         if self._addons:
             raise RuntimeError("AddonManager already set!")
@@ -247,10 +272,12 @@ class CoreSys:
     @property
     def store(self) -> StoreManager:
         """Return StoreManager object."""
+        if self._store is None:
+            raise RuntimeError("StoreManager not set!")
         return self._store
 
     @store.setter
-    def store(self, value: StoreManager):
+    def store(self, value: StoreManager) -> None:
         """Set a StoreManager object."""
         if self._store:
             raise RuntimeError("StoreManager already set!")
@@ -259,10 +286,12 @@ class CoreSys:
     @property
     def snapshots(self) -> SnapshotManager:
         """Return SnapshotManager object."""
+        if self._snapshots is None:
+            raise RuntimeError("SnapshotManager not set!")
         return self._snapshots
 
     @snapshots.setter
-    def snapshots(self, value: SnapshotManager):
+    def snapshots(self, value: SnapshotManager) -> None:
         """Set a SnapshotManager object."""
         if self._snapshots:
             raise RuntimeError("SnapshotsManager already set!")
@@ -271,10 +300,12 @@ class CoreSys:
     @property
     def tasks(self) -> Tasks:
         """Return Tasks object."""
+        if self._tasks is None:
+            raise RuntimeError("Tasks not set!")
         return self._tasks
 
     @tasks.setter
-    def tasks(self, value: Tasks):
+    def tasks(self, value: Tasks) -> None:
         """Set a Tasks object."""
         if self._tasks:
             raise RuntimeError("Tasks already set!")
@@ -283,10 +314,12 @@ class CoreSys:
     @property
     def services(self) -> ServiceManager:
         """Return ServiceManager object."""
+        if self._services is None:
+            raise RuntimeError("Services not set!")
         return self._services
 
     @services.setter
-    def services(self, value: ServiceManager):
+    def services(self, value: ServiceManager) -> None:
         """Set a ServiceManager object."""
         if self._services:
             raise RuntimeError("Services already set!")
@@ -295,10 +328,12 @@ class CoreSys:
     @property
     def discovery(self) -> Discovery:
         """Return ServiceManager object."""
+        if self._discovery is None:
+            raise RuntimeError("Discovery not set!")
         return self._discovery
 
     @discovery.setter
-    def discovery(self, value: Discovery):
+    def discovery(self, value: Discovery) -> None:
         """Set a Discovery object."""
         if self._discovery:
             raise RuntimeError("Discovery already set!")
@@ -307,10 +342,12 @@ class CoreSys:
     @property
     def dbus(self) -> DBusManager:
         """Return DBusManager object."""
+        if self._dbus is None:
+            raise RuntimeError("DBusManager not set!")
         return self._dbus
 
     @dbus.setter
-    def dbus(self, value: DBusManager):
+    def dbus(self, value: DBusManager) -> None:
         """Set a DBusManager object."""
         if self._dbus:
             raise RuntimeError("DBusManager already set!")
@@ -319,10 +356,12 @@ class CoreSys:
     @property
     def host(self) -> HostManager:
         """Return HostManager object."""
+        if self._host is None:
+            raise RuntimeError("HostManager not set!")
         return self._host
 
     @host.setter
-    def host(self, value: HostManager):
+    def host(self, value: HostManager) -> None:
         """Set a HostManager object."""
         if self._host:
             raise RuntimeError("HostManager already set!")
@@ -331,10 +370,12 @@ class CoreSys:
     @property
     def hwmonitor(self) -> HwMonitor:
         """Return HwMonitor object."""
+        if self._hwmonitor is None:
+            raise RuntimeError("HwMonitor not set!")
         return self._hwmonitor
 
     @hwmonitor.setter
-    def hwmonitor(self, value: HwMonitor):
+    def hwmonitor(self, value: HwMonitor) -> None:
         """Set a HwMonitor object."""
         if self._hwmonitor:
             raise RuntimeError("HwMonitor already set!")
@@ -343,10 +384,12 @@ class CoreSys:
     @property
     def ingress(self) -> Ingress:
         """Return Ingress object."""
+        if self._ingress is None:
+            raise RuntimeError("Ingress not set!")
         return self._ingress
 
     @ingress.setter
-    def ingress(self, value: Ingress):
+    def ingress(self, value: Ingress) -> None:
         """Set a Ingress object."""
         if self._ingress:
             raise RuntimeError("Ingress already set!")
@@ -355,10 +398,12 @@ class CoreSys:
     @property
     def hassos(self) -> HassOS:
         """Return HassOS object."""
+        if self._hassos is None:
+            raise RuntimeError("HassOS not set!")
         return self._hassos
 
     @hassos.setter
-    def hassos(self, value: HassOS):
+    def hassos(self, value: HassOS) -> None:
         """Set a HassOS object."""
         if self._hassos:
             raise RuntimeError("HassOS already set!")
@@ -370,7 +415,7 @@ class CoreSys:
         return self._machine
 
     @machine.setter
-    def machine(self, value: str):
+    def machine(self, value: str) -> None:
         """Set a machine type string."""
         if self._machine:
             raise RuntimeError("Machine type already set!")
@@ -382,7 +427,7 @@ class CoreSys:
         return self._machine_id
 
     @machine_id.setter
-    def machine_id(self, value: str):
+    def machine_id(self, value: str) -> None:
         """Set a machine-id type string."""
         if self._machine_id:
             raise RuntimeError("Machine-ID type already set!")
@@ -390,17 +435,17 @@ class CoreSys:
 
 
 class CoreSysAttributes:
-    """Inheret basic CoreSysAttributes."""
+    """Inherit basic CoreSysAttributes."""
 
-    coresys = None
+    coresys: CoreSys
 
     @property
-    def sys_machine(self) -> str:
+    def sys_machine(self) -> Optional[str]:
         """Return running machine type of the Supervisor system."""
         return self.coresys.machine
 
     @property
-    def sys_dev(self) -> str:
+    def sys_dev(self) -> bool:
         """Return True if we run dev mode."""
         return self.coresys.dev
 
@@ -410,7 +455,7 @@ class CoreSysAttributes:
         return self.coresys.timezone
 
     @property
-    def sys_machine_id(self) -> str:
+    def sys_machine_id(self) -> Optional[str]:
         """Return timezone."""
         return self.coresys.machine_id
 
@@ -549,10 +594,12 @@ class CoreSysAttributes:
         """Return HassOS object."""
         return self.coresys.hassos
 
-    def sys_run_in_executor(self, funct, *args) -> asyncio.Future:
+    def sys_run_in_executor(
+        self, funct: Callable[..., T], *args: Any
+    ) -> Coroutine[Any, Any, T]:
         """Add an job to the executor pool."""
         return self.sys_loop.run_in_executor(None, funct, *args)
 
-    def sys_create_task(self, coroutine) -> asyncio.Task:
+    def sys_create_task(self, coroutine: Coroutine) -> asyncio.Task:
         """Create an async task."""
         return self.sys_loop.create_task(coroutine)
diff --git a/supervisor/store/addon.py b/supervisor/store/addon.py
index db7ae945b..0e4b8fdff 100644
--- a/supervisor/store/addon.py
+++ b/supervisor/store/addon.py
@@ -2,7 +2,6 @@
 import logging
 
 from ..addons.model import AddonModel, Data
-from ..coresys import CoreSys
 
 _LOGGER: logging.Logger = logging.getLogger(__name__)
 
@@ -10,11 +9,6 @@ _LOGGER: logging.Logger = logging.getLogger(__name__)
 class AddonStore(AddonModel):
     """Hold data for add-on inside Supervisor."""
 
-    def __init__(self, coresys: CoreSys, slug: str):
-        """Initialize data holder."""
-        self.coresys: CoreSys = coresys
-        self.slug: str = slug
-
     @property
     def data(self) -> Data:
         """Return add-on data/config."""