Mikey Kelly, Robbie Rist, & Greg Cipes have each voiced/played Michelangelo from the Teenage Mutant Ninja Turtles. Robbie Rist voiced him in the 1989 live action movie & it's two sequels. Mikey Kelley voiced him in the 2007 CGI movie TMNT. Greg Cipes has & is currently voicing Michelangelo in the Nicolodean CGI tv series which has aired since 2012.
They each voice one of Toby's Ninja-villain brothers, Brandt (Greg Cipes), Dom (Mikey Kelley), & Lamar (Robbie Rist). Though they are villains & pigs, the colored bandanas & voice talents seem to indicate inspiration from the Turtles.
The only Pig brother/ninja not voiced by a previous Turtle actor is Chad, voiced by Adam McArthur.