Well who are we fighting to the death against?
Is it a never-ending stream of mooks, a bunch of dudes until all of one party is dead, or the Invincigiganticlyevilmegadeathbotraptorsaurus?
If it's harmless mooks, then I'll go for a Bouncer (Bioshock), Von Hohenheim (Full Metal Alchemist) and Gordon Freeman (Half Life)
For a bunch of dudes in a fistfight, probably Mike Thorton (Alpha Protocol), Batman (Do I really need to tell you?) and Beatrix Kiddo, AKA Black Mamba, AKA The Bride (Kill Bill)
If it's, the Invincigiganticlyevilmegadeathbotraptorsaurus, then Kratos (God of War), The doctor (Doctor Who), and the Invincigiganticlygoodmegadeathbotraptorsaurus Prime-rex