Jack also has a phobia of clowns, which he confronted in "Boo Gi Nights".
Jack also tends to say "You probably shouldn't have done that", whenever someone tries to punch him and he blocks it.
He has great respect for his elders, particularly Rudy, but dislikes being told what to do and when, he also dislikes being shoved away.
In the episode "Buddyguards" it is revealed that Jack can play guitar.
Jack is loyal to his friends and inspires them to give 110%, just as he himself always does.
He cannot stand the scent, or taste, of blue cheese.
In Hit the Road Jack, it is revealed that she has feelings for Jack, which she admitted to Joan. It has been confirmed by Olivia Holt that Kim will not be returning for the beginning of Season 4, due to the filming of her new show, I Didn't Do It, but she made a guest appearance in Seaford Hustle, You Don't Know Jack and the series finale.Jack does a Bobby Wasabi move to win the tournament and keep the dojo running.Also in this episode, Kim from the Black Dragons changes to Bobby Wasabi`s dojo.The following is a list of episodes in the Disney XD Original Series Kickin' It.Bobby Wasabi Martial Arts Academy is known as the worst dojo in the under-performing nationwide Bobby Wasabi chain.In episodes towards the end of Season 2 A Slip Down Memory Lane, Hit the Road Jack, Wazombie Warriors, New Jack City, Karate Games" etc.), it is revealed that they both have feelings towards each other. At the end of Kickin' It On Our Own, Jack finally asks Kim out on a date, blowing off practice to get pizza. (Turns around and widens eyes) Kim: So, um, where's Kathy? we're, having a great time, hanging out, tearing it up. In Two Dates and a Funeral, it is shown that Jack truly does have feelings for Kim, and they officially start dating. In Wasabi Forever, Kim and Jack say their final goodbyes to each other as they go different ways and share their first kiss! On occasion in Season 4, Jack has shown that he misses Kim, and he does keep a picture of her in his locker. Kim: Uh, I don't know, I just started dancing, turned around, and he was gone. They are reunited in Seaford Hustle when Kim came to visit Jack from Japan after Jerry arranged it so they could see each other. Rudy lies to Jack and says he will go to juvie if he does not join and helps them get 2 belts, the dojo will close down.Later Rudy let his secret slip and Jack quits until he hears the disappointment of his friends. Kim competes against Jack, but after the Sensei for the Black Dragon cheats, Kim quits and does not fight Jack.