Bestbank Tiger
Deity
It's pretty much impossible to keep people from doctoring images and posting them online. Most you can do is declare it isn't canon.He even tried to "kill off" Pepe, if I recall, because of it, and that still didn't stop people (and doesn't stop people) from using Pepe or characters that are now derived from his likeness.
But if the Trump campaign tries to sell Pepe merchandise, the original artist or whoever has the copyright should be able to say no.
Honkler is more of a gray area as he's a new creation but is also a derivative work. (Also makes it silly to kill Pepe off when he did as the redhats had already moved on.)