You are a vampire

You were their companion

you were traveling in a cart with horses

You were sitting next to Trevor in the middle, under the cover of the cart, and Alucard was driving

Alucard: Belmont. Just don't get drunk there

He said in a serious voice. He gave Trevor the middle finger

Trevor turned to Alucard

Trevor: Uh, said... a cockmouth with supposedly awesome manners.