Josh was a teenage human male with sandy brown hair and thick eyebrows.
He was seen wearing a brown striped polo shirt, white button-down jacket with pink stripes on the sleeves, light blue jeans with a patch on the right knee, brown belt, and a pair of dark grey and white lace-up sneakers.
Little is known about Josh's personality or personal background other than his family was poor.
In A Horse Walks into a Rehab, BoJack flashes back to a party he attended in high school. BoJack goes into the restroom at Jameson H.'s boyfriend Dathan's party, flashing back to his younger self when a guy knocks on the door—asking if someone is having sex in the bathroom.
The guy then calls teen BoJack a nerd. Teen BoJack then nervously knocks over a shelf of cassette tapes. He starts picking up the tapes when a girl named Katie from his Spanish 1 class comes over to help him. BoJack's classmate offers him a beer, and BoJack is reluctant since they are still under-aged. Ultimately, he agrees to take the beer.
BoJack then loosens up and takes jabs at various classmates. He makes fun of Eric from Chemistry class. He bullies a boy named Josh for wearing Kmart shoes because his family is poor. He makes fun of Katie's breast size, which causes her to run off crying. Young BoJack then drinks more alcohol.
- His last name isn't given.