Oh my so I guessSpoiler: showit's the Leader..or the guy who was meant to be him..after She-Hulk's blood.
Haven't read the comics in a good while so no wonder I didn't catch that!Spoiler: showthey’ve embraced the rest of the Hulk movie, so I’m guessing he’ll already be at least partially transformed as he was already infected at the end of the movie. Jen’s blood is either to further mutate him or try to cure/stabilize his condition.