Humanzi was founded in Dublin by Seán Mulrooney (then Shaun) after his previous band, Listo, split up.
Their success grew significantly over their years, especially after their debut album, Tremors, they began to earn a sturdy name in Ireland and abroad.
However issues with the record industry at the time due to the rise of streaming and internal disputes between members lead to the demise of the band after the release of their second album Kingdom of Ghosts.
[citation needed] Humanzi have opened for and toured with bands including the Foo Fighters, The Strokes, The Pixies, Eagles of Death Metal, the New York Dolls, Dirty Pretty Things, Peaches, and White Rose Movement.
[citation needed] The song "Fix the Cracks" was featured on the Atari video game Test Drive Unlimited, released in 2006.