Maybe Snake. He made a cameo appearance in Boktai and therefore, is friends with Django.

Considering you were one of those stupid Social Links, you might not want to judge them too quickly. Just sayin'

He wouldn't be opposed to it! Pretty sure Django's one of those pacifists who's just really good at fighting because he had to do it so much. You know, like Megaman. Which is why Capcom and Konami agreed on that Boktai/Megaman Battle Network crossover