Kai Ross-Best (born: November 10, 1999 [age 23]) is an English YouTuber and musician. He is from Kent, in the South East of the United Kingdom. He is most known for playing Minecraft and Pokémon among others. His music is inspired by Alice Cooper, Aerosmith and Foo Fighters to name a few. Kai is also in a band called King for a Day and has even played on stage with Green Day.
He is Jack's first editor. He edits the JackSucksAtStuff Reddit videos and most of the JackSucksAtGeography videos and shorts. In old Reddit videos from 2018 and occasionally now, Jack makes Kai track his finger all around the screen. Jack also made Kai swirl his face and other funny edits. Jack would also mention him when he wants Kai to edit something very hard. When Jack talks to Kai, Kai will edit his reply onscreen in text for a frame or two. He formerly edited all of the JackSucksAtLife videos and the X-Life series videos. Jack has once said that "[Kai] is the best editor a man could ever ask for". He has a YouTube channel named "Kai Ross-Best". Kai has once taken over Jack's channel due to Jack spilling juice on his computer (which caused him to buy a "non-fancy" graphics card - an Nvidia GTX 1050).
Kai's pets include a corn snake named Steven and his dog Koda, who is a Japanese Spitz. He also has two cats called Mango and Roxie. Kai also had a cat called Kiki who sadly passed away in October 2022.
Kai used to co-host a podcast called "Help I'm Stuck In A Podcast!" with FraserIRL.