The Leader has been in several bits and pieces of the trailers - in some you see his green tinted hands, others he’s lurking in the background, and in some he has voiceover work.
I’m stoked to see him back. Norton’s Hulk is by far the best Hulk (not saying much) and I was excited to see the Leader teased. It might be a stretch of storytelling to explain who he is and remind folks where he came from, but maybe this movie takes on a completely different approach on his origins. I’m excited for this movie…more so than most marvel projects recently
EDIT: and to say all of that - this is the same damned company that had the rights to Abomination and completely nerfed the character in She Hulk…..so maybe I’m wrong and shouldn’t get my hopes up.