The Kaigland Chronicles
Splatt the Wonder Tribble
Splatt the Wonder Tribble was a confused Wizard recovered on another world by the crew of the Sacrelicious Legacy who hitched a ride and became a valuable member of the party, thanks to his mastery of Staff critical hits and stinking clouds.
Much later, it would be discovered that Splatt was born on Kaigland years earlier, and was brother to Tyrol. He was also tossed back in time upon defeat of the Adaptation Monster. He once again was struck by some insanity and amnesia, and became the great wizard Doozledorf… and his memories of journeying with the party are what lead him to choosing them in the first place.