As of IWBFT, the band has reached international fame across Europe and Asia, but they have yet to really break through in the USA. They have released an album and several singles.
The band currently has three members, who all play their own instruments:
Lister: drums, backup vocals 
Jimmy: lead singer, guitar, keys, and a launchpad live.
Rowan: backup vocals, bass guitar, guitar
Jimmy and Rowan are childhood friends, and they always dreamt of starting a band. When they met Lister at school and discovered he could play the drums they became friends and eventually convinced him to join them in forming The Ark. All three members are close friends, although Jimmy and Rowan are a bit closer than Lister is to them, due to knowing each other for longer.