I'm very new to the creation process of subclasses. I've made many homebrew items and such which to me is way easier. I've been wanting to make a "Dark Shadow" subclass. The "Dark Shadow" I am referring to is the one of My Hero Acadamia. I saw someone has created one on the D&D wiki homebrew page. I was hoping someone can either help me or just do it yourself, to transfer it to dndbeyond. I appreciate any info and any help on this matter. Thank you.

Link to the wiki page: https://www.dandwiki.com/wiki/Dark_Shadow_(5e_Class)

Sure, I can help you. I won’t do it for you, but I’ll help you. For starters, what all do you need help with? What’s causing you the most trouble I mean?

Oh, wait, I just looked at what you linked. That’s not a subclass, it’s a whole class. We cannot make those on DDB.

yeah, I know its a whole class. Wasn't sure if it was possible to make it into a subclass. Possibly for a Fighter Class? or Warlock maybe?

Nah, there’s no way to get rid of the base class features.