Peegoo
Doctor of Teleocity
A lot of "nicknames" are received for various reasons in childhood and some of them become fixed for life.
Geddy Lee's name is Gary, but his old-country Polish grandmother pronounced it as sounding like "Geddy," so his pals latched onto that and called him Geddy too.
Ric Emmett of Triumph's name is Rick, but the record company approved printing of album jackets with his name inadvertently misspelled. And for the band it was a joke so good, it stuck.