J.T. Forbes is a long-time friend of Vincent Keller. He is also a scientist and helped Vincent over the years as he tried to restrain his beast powers and discover a cure. He's sarcastic, and funny, but would do anything to help those he holds dear.
Tess: It's just, I dread this holiday so much. It's the part where my family grills me about my single status and there are no gifts to offset the humiliation.
J.T.: Then don't go. Tell them you're working, which you are. We can boycott the holidays together.
Tess: Just you and me?
J.T.: And some beer and some pizza and some creepy guy's voice.
Tess: Can we start drinking now?
J.T.: Absolutely. This is going to be the best Thanksgiving ever! Non-Thanksgiving.
Cat: Have you heard from Vincent yet?
J.T.: I'll just leave the damned door open from now on.