Martingo

Martingo is the self-proclaimed "Sultan of Spektran", ruling of the isle of Spektran in Ultima VII. But in reality he is just a rich man who has lost his mind, going totally bonkers.

The Avatar had to meet him when it became clear that Lord Draxinosum had sold his Ether Ring to him. Matrtingo was totally useless, but informed the Avatar that he could have the ring, if he managed to get it. It was a trap, as the ring was guarded by a Stone Harpy. Defeating the harpy and retiving the Ether Ring, the Avatar left Martingo alone in his madness.

Trivia

 * Martingo's madness shows itself, beside others things, by talking to non-existant people, having a imaginary harem, beliving himself a big ruler and a fetish for bananas.