Mike

 Mike is Sam's younger brother and Anna's older brother. Mike, like the rest of the family, is a nudist and was concerned about Sam since he started wearing clothes. Though Mike and Anna do wear underwear and Anna wears a bra everywhere but Dunwich, they are typically fully-nude. Mike and Sam competed in growing facial hair at quite a young age. Sam grew a moustache in his adolescent years. To compete, Mike grew a beard. In Zvanzig, Mike hides his envy of Sam for having a full head of hair, a moustache AND a beard. His envy soon died away as he began playing video games with Anna on Sam's pickle couch.