You've seen the last of him in an animated special called A Very Pink Christmas back in 2011, but he's actually been sneaking in the tattoo sleeves of some cartoon classic fans over the years.
You may vaguely remember The Pink Panther from a number of vintage comedy films featuring a large, valuable pink diamond called "The Pink Panther" for the panther-shaped mark inside the rock. The Pink Panther cartoon character wasn't anything major until the cartoon series came out, but fans are still paying tribute with these Pink Panther tattoos. There you have it, a short introduction to the elusive pink panther.
If you like graphic, cartoon-y stuff, you're going to have fun with this tattoo artist: Woohyun Heo's Zany Double Image Illusion Tattoos