Sentri
From Editable Codex
Sentri is a recurring character who can join the party on several occasions. He is a Fighter and hails originally from Earth.He first appeared in Ultima II as "Sentri the Swashbuckler" in New San Antonio, where he was thrown into prison. Freeing him, the Stranger received the Quicksword to slay Minax.
By Ultima IV, Sentri was the Baron and keeper of Serpent's Hold. He told the Stranger one part of the password for the Codex, Veramocor, after he/she gained all eight partial Avatarhoods. By the time of Ultima V it was apparent he no longer held his former prestige, instead taking refuge from the Shadowlords in Bordermarch with Dupre. He was able to join the Avatar on the quest to topple Lord Blackthorn's dictatorial regime.
Sentri was again found on Serpent's Hold in Ultima VI and again eager to fight at the Avatar's side.
By the time of Ultima VII he had opened a trainer's shop in Britain, offering work-outs. He once more volunteered his aid in the Avatar's quest, in turn offering free Dexterity training for the party.
Sentri did not appear as a character in Ultima IX but was referenced in the form of a pair of unique magic leggings found in the ruins of Serpent's Hold.

