In Blade 2, Scud is ordered by the bloodpack to hold open a reaper's mandibles while they're dissecting it. Scud is reluctant, but Blade calls him a "sissy" so he goes ahead with it. It seems out of character for Blade to back a bit of vampire bullying in favor of his human companion, but the end reveals that Blade knows that Scud is a double agent, so he doesn't really gives a damn about Scudd.
Deacon Frost's plan is to summon the Blood God, which will turn all humans into vampires. Why would a vampire want to do that? It would be like a lion turning all its prey into lions. If everyone in the world is a vampire, who will the vampires feed on?