TK is a mysterious character who speaks in semi-nonsensical English quoted from pop culture depending on the situation of the scene. He saves the team many times and does know some Japanese but rarely speaks it, and it seems he understands what the others say to him. And he is talented in almost anything (mostly in dancing). He was always seen dancing even though fighting his enemies. His real identity and his name are unknown to characters in the show, even to the SSS, so they identify him as "TK", a nickname he gave himself.
Powers and Stats
Tier: 9-B, 9-B with weapons
Origin: Angel Beats!
Age: In his late teens
Classification: Member of the SSS
Powers and Abilities: Superhuman Physical Characteristics, Regeneration (Low-Godly, though this takes time), Skilled marksman, Immortality (Types 1, 3, and 4), Skilled in hand to hand combat, Extremely skilled dancer
Speed: Athletic Human with Subsonic combat speed (Able to move fast enough to appear as a blur)
Lifting Strength: Regular Human
Striking Strength: Wall Class+
Durability: Wall level+ (Comparable to if not superior to fodder SSS members who can tank a cannon exploding at point blank range with only minor injuries)
Stamina: Superhuman (Never appears tired even though he is constantly moving)
Range: Standard melee range, Dozens to hundreds of meters with weapons
Standard Equipment: L.A.R. Grizzly and Browning Hi-Power pistols, PP-19 Bizon submachine gun
Weaknesses: Not fluent in English even though he constantly speaks it