Adrian has contributed to writing only two songs, "Open the Gate" and "Move On".
Adrian's brothers are Aaron, Alex, Damian, and Jeff.
Adrian's parents were hippies.
Adrian loves to play golf.
Adrian is sometimes a fill in drummer for The Vandals and Gabrial McNair's band, Oslo.
After No Doubt formed in 1987, Adrian became a huge fan. In 1989, he auditioned to become their new drummer. At the audition, he lied saying that he had been playing for six years.
Adrian started playing the drums in 1987, the same year No Doubt formed.
Gwen Stefani and Adrian used to have crushes on each other.
Adrian's height is 6'.