I remember him now. He never really took off, I guess? Are they trying to push the more obscure characters now? They just announced the Muerto movie, based on a dude with like, 2 appearances twenty years ago.
Scratch that, this will be his fourth appearance in something animated. He was in a few other things since then.
As far as popularity and relevance goes, he’s not well-known as other heroes but at least he has some history in the Marvel universe since He has appeared in multiple comic book issues. Moreso than El Muerto who ONLY appeared in those two issues.