Yes. He has a full Auto-Rig Pro body rig with fingers, plus face controls for the jaw, lips, eyelids, eyebrows and tongue.

No, you can pose and animate with plain Blender. You only need Auto-Rig Pro for its own tools, like IK/FK snapping and the rig panel.

Yes. Use the fatty, builder and skinny shape keys on the body and clothes, then pick the matching body material for the best skin detail.

Swap the materials in Material Properties. There are 4 color sets for the coat, shirt, trousers and hair, and light and dark versions of every body material.

Yes. Each one is a separate object, so you can hide it in the Outliner.

FBX and GLB files are included. They should import into common engines, but they have not been tested in each engine, so check the rig and shape keys after import.

Yes, under the Royalty Free license you can use it in commercial renders, games and videos. You cannot resell or share the model files themselves.