Taishirou Toyomitsu, the Pro Hero Fat Gum, wields the Quirk Fat Absorption to convert kinetic energy from physical strikes into stored power within his body fat. This grants him formidable defense against projectiles and blunt force, while the accumulated energy can be explosively released for offensive surges—though doing so shrinks his imposing 250 cm frame into a leaner, muscular state, temporarily reducing his defenses until he replenishes his mass through intense eating. A mentor to Eijiro Kirishima and Tamaki Amajiki, Fat Gum sharpens their strengths and confronts their vulnerabilities, fostering Kirishima’s combat resilience and steering Tamaki past hesitation. His leadership merges camaraderie with calculated precision, emphasizing unity and tactical efficiency. During the Tokyo raid on Humarise in *World Heroes’ Mission*, he partners with Cementoss and Present Mic, directing his trainees to neutralize threats while using his Quirk to shield allies and orchestrate counterattacks. Raised in Osaka, his childhood affinity for takoyaki persists, and though his early career remains undefined, his renown stems from minimizing collateral damage and safeguarding civilians. Collegial bonds, such as with Monika Kaniyashiki, reflect his collaborative spirit and penchant for humor off-duty. Fat Gum’s dedication demands relentless caloric intake to sustain his Quirk, a routine underscoring his commitment. In combat, he shatters enemy morale through sudden, overwhelming strikes, expelling stored energy to pivot from steadfast protector to unpredictable aggressor. This duality cements his versatility in team operations, balancing unyielding defense with explosive offense.