Mark Hoppus

Mark Allan Hoppus (born March 15, 1972) is an American musician, singer, songwriter, record producer, and former television personality best known as the bassist and co-lead vocalist of the rock band Blink-182, as well as part of the pop rock duo Simple Creatures with All Time Low's Alex Gaskarth.

In Calvin and Hobbes, he is known for being the voice and motion capture of Jack in the Calvinverse, as well as contributing to songs on the soundtracks.