Venom is the lead of MPIC, he is a male Rainwing who has had a rotten childhood. He eventually learned how to put up walls and act indifferent in order to protect himself. He is a skilled mercenary. I imagine his voice to be a tenorish male, with perhaps a bit of gravel to it,  he's usually sarcastic/indifferent and annoying. But he's very smart and sometimes even playful. He lives for witty banter. 

Reference for what his voice might sound like. Start with your best imitation of Nick wilde from Zootopia and work your way from there. I'd be fine with Venom sounding like nick, perhaps a bit deeper though. A little scratchy, play with it.