The owner of the powerful Blakk Industries, Dr. Blakk's business dealings have made him a rich and powerful man. Ultimately, his business is hiding his true purpose: to control all of Slugterra and destroy the magical slug energy that protects this underground world. A powerful slugslinger with a terrifying multi-shot Harbinger Firestorm blaster, Blakk has corrupted his slugs through the dark science of ghouling, turning them into ruthless shadows of their former sluggy selves.

Dr. Blakk is the main antagonist of Slugterra 

The Christian dad of Devilman Crybaby

Danny Phantom Comedic Relief Antagonist

https://archiveofourown.org/works/45241951?view_full_work=true