He’s only appeared in 1 Marvel movie so far and wasn’t scheduled to ever appear again. However, looking at the photos below – he’s back!
Damion Poitier who originally played Thanos at the end of The Avengers has been spotted on the Captain America: Civil War set. Josh Brolin is continuing as Thanos, so it looks like Marvel was able to create a part as a goon for Crossbones. Or maybe there’s more to the story? We’ll keep you updated!