Vurp is a Hobgobwin from Gobwin Knob, and rose to become a member of the Knights In Stanley's Service. He was selected by Stanley, as one of the top three Knights among the KISS, to accompany him on his mission to claim Faq, and of the three, was the only survivor of their encounter with the forces of Transylvito, and returned to Gobwin Knob with Stanley, Jack Snipe and the six remaining Dwagons.
SpeculationGiven that a blue dwagon is seen with a rider retreating with Stanley and Jack in TBFGK page 116, panel 3, and there were only three Knights in Stanley's Service in the battle group heading toward Faq riding a green, blue and purple dwagon (seen in TBFGK page 111, panel 11, then it is likely that the Knight dance-fighting with a Transylvito vampire on the back of the blue dwagon on TBFGK page 113, panel 3 is Vurp. It is also likely that this hobgobwin is Vurp and survived the battle, because the mustachioed Transylvito vampire is not seen in subsequent comics, implying that Vurp won the knife fight we see below.
Although he is never named, the "suspendered, mustachioed" Transylvito warlord, who Vurp may have killed, speculatively is "Mario". It is noted he strongly resembles "Mario" from the uber successful Mario Brothers video games and Mario Puzo is the Author of "The Godfather" which ties in with Transylvito's Cosa Nostra tones. Also, our dear authors appear to love triangulated puns for their character names or perhaps its just their fans like finding them.
Real World Reference
The word "Vurp" is a slang portmanteau of vomit and burp, and refers to when you vomit a little bit in your mouth.