Hello, i'll be showing you in this thread how to make a Realistic Character in Cinema 4D
So first you setup the C4D And insert your character.
I'll be using a character that has no Texture (I'll be making a texture for it)
After that you will have to check the Reflections, then delete the default settings.
Then you have to add a GGX and change the Attenuation to Additive
You can edit the settings how you like but my personal choice is making the Reflection Strength to 50% But yea it's your choice after all
Then, You will need to add a lightroom you go to File -- Merge -- And add your Lightroom
Then do a test render to check how it looks,
This is how it turned out for me (I added some physical Sky for it for better quality)
You can check this video for more help