Launcelot

Sir Launcelot is one of the members of King Arthur's squad

Background
Launcelot once rescued Galahad from Castle Anthrax. Launcelot is the group "badass", and functions as supporting fire for when someone dares challenge the king's tongue.

Other interactions
Launcelot would probably chuck the Holy Hand Grenade at the Chosen One if he gave him half a chance. Basically, do all the talking through Arthur.

Appearances
Sir Launcelot appears only in Fallout 2.

Behind the scenes
Launcelot is a reference to Sir Lancelot, specifically the version from the film, Monty Python and the Holy Grail.