Character Name: Itami Koga, Best Pain
Universe Name: Medaka Box
Status in regards to the plot: Antagonist
Tier in the series: Low Mid
Powers and Abilites: super speed, strenght, durability, low-mid regen, can move her body parts in untatural ways
Destructive Capability: Building Level+, Large Building Level+ at max output
Intelligence: Fairly high
Stamina: Superhuman, 3 minutes at full power
Durability: Building Level+, Large Building Level+ at max output
Occupation: Flask Plan
Range: Extended Human Melee range
Weakness: Can only go full power for 3 minutes
Accuracy: can adjust mid attack in unnatural ways, so very high
Standard Equipment: None
Cybernetic Superhuman Physiology: Koga is the strongest female in Class 13. This is because Naze remodeled her, transforming her body into that of an android, and making her near invincible. Koga's modified body allows her to bend in unnatural ways, heal at unnatural speeds, and grants her inhuman strength and speed. Her project name of Best Pain is a reference to the nature of her modifications: her pain receptors were not only kept, but enhanced. This is to keep track of her energy so that she doesn't waste it, as her robotic muscles drain her body's energy quickly; she can only move at maximum speed for about three minutes. For this reason, her abilities to inferior to Shigusa Takachiho, whose movements are natural. After exhausting herself, Koga can use energy drinks to recover her strength.
- Rider Kick (ライダー キーック, Raidā Kīkku): While standing on the ceiling, Koga jumps down at her opponent with her leg outstretched. Her kick is strong enough to go through multiple floors.
- Rider Jump (ライダー ジャーンプ, Raidā Jānpu): Koga jumps and performs an uppercut. Her jump is strong enough to propel her at least two floors.
- Rider Chop (ライダー チョーップ, Raidā Chōppu): A powerful downwards chop.
Wall Climb: Koga can walk on walls by grabbing the surface with her feet and holding her body so that she appears upright with her abs. Koga is so proficient with this technique that she can even walk on ceilings. Because of this, Koga can attack from both above and below, as well as fight while standing on her hands. Akune comments that gravity seems not to affect her. However, when fighting seriously, Koga does keep both her feet on the ground.
Superhuman Desire: Originally a Normal, Koga's true Abnormality is her desire to be abnormal, which allowed her to survive Naze's experimentation.
Other: Naze's BFF
Battle History in The Arena: