Using the term "half-breed" is exactly not the way to go about convincing somebody that a character is not built on racist stereotypes.
You do know we are talking a character using alien rings to make himself a warlord, right? Most of Marvel's villians are stereotypes and half breeds, but the MCU turned Loki into a full frost giant somehow.
Could you please not use the term, though? For some of us real, live, mixed-race people it's like being slapped in the face and being told we're "not enough". I've known you online for years now,
D, and I know you don't mean any harm, but please believe me when I say that just seeing the term used can be a really hurtful thing.