Springheel Jak

Springheel Jak, a legendary theif, lived and reigned roughly 300 years before the player's career in Elder Scrolls IV: Oblivion. His name first appears in a mission assignment from the Gray Fox, a supposedly immortal Guildmaster of the Thieves' Guild.

During the aformentioned mission, the player must infiltrate the final resting place of Springheel Jak in search of his legendary boots, which were buried with his body 300 years ago. Upon opening his tomb, the player finds that there are no such boots, but there is a diary. The diary of springheel Jack provides roughly a half-dozen entries from the post-mortem Springheel Jak. These entries document his transformation when he contracted vampirism and multiple entries detailing his rediscoveries of said diary. These entries show his progressive gain of control over his thirst for blood, and ends with, "I rule the night here in the [Imperial] city."

This is part of the Boots of Springheel Jak mission.