Pendelton

 was was a Brotherhood of Steel soldier in the Citadel.

Background
He had an appendectomy (performed by Sawbones) where a rotary saw was tested out to see how well it would work, suturing was ineffective in closing his abdomen so they used high-intensity heat to cauterize the cut. The outcome of the operation was successful.

Appearances
is only mentioned in Fallout 3.