- "An insolent brat. Ability to hold breath indefinitely is of dubious if any use. Not bad with a knife—as illustrated by the amount of gashes in the Caravaggio. Predictably reckless."
- —The Monocle[src]
The Kraken (00.02 Diego Hargreeves) is the reckless and rebellious member of the group; described by The Monocle as “an insolent brat.” He has the ability to hold his breath indefinitely and has demonstrated a strong affinity for knife-throwing. He and Luther have a very clear rivalry, and Diego seems unwilling to take orders from Luther. He is more of a Batman-like superhero in that he goes on regular patrols and can be seen taking down drug dealers. In his teenage years, he was the bass player in a band called the Prime-8s, with Body (Inspector Lupo's assistant), and Vanya Hargreeves. He is also seen to be left handed in the short story "Anywhere But Here," as he is playing the bass left handed. It appears that he harbors a secret love for his adopted sister, Vanya. It is yet to be seen how The Kraken lost his right eye, but he has no sight in his right eye and wears an eye-patch when not wearing his mask, which has a blacked out right eye.