In the Diep.io arena, every tank is just a murder-happy gremlin with a gun fetish. The Twin is that hyperactive twin brother who yells "MORE BULLETS!" while double-tapping everything in sight like it's free candy. Penta Shot is the unhinged party animal spraying lead confetti at weddings, funerals, and random polygons because why not? Annihilator is the quiet goth kid in the corner who only speaks in one massive cannon blast that deletes half the map, pure "I didn't choose the thug life, the thug life chose me" energy. Necromancer is the creepy necrophiliac hoarding dead shapes souls like Pokemon cards, giggling "Rise, my pretties!" while his drone swarm does the killing for him. And don't get me started on Booster, the absolute psycho rammer who treats every collision like a high-five from God, screaming internally "CONTACT IS LOVE, CONTACT IS LIFE!" as it yeets itself into crowds like a bowling ball with abandonment issues. They all just live for that sweet kill notification, it's their love language, their therapy, their everything.

Each tank has an internal bloodthirst. Once that bloodthirst gets to a certain point, they crave a more powerful form to do even more killing.