Shikkui Makabe, alias Mr. Smith, attends Ketsubutsu Academy High School as a Pro Hero trainee. His striking appearance features blue, rock-textured skin forming a carapace-like exterior, lacking visible hair, nose, or ears. A jagged, wide mouth edged by upward spikes dominates his face, complemented by thick-lashed blue eyes. Darker-blue ringed segments encircle his neck, while his hero costume pairs a puffed black parka with a high collar, gold chain, white shirt, baggy cyan pants, and fur-lined dark blue ski boots. Renowned for his composed charisma, Shikkui champions teamwork as the backbone of heroism. In the Provisional Hero License Exam, he joins classmates in Ketsubutsu’s tradition of ambushing U.A. High’s Class 1-A, hurling projectiles enhanced by his Quirk, Stiffening—a power to harden non-living materials on contact. Partnering with Itejiro Toteki, he fortifies debris for precise throws. When U.A. resists, Shikkui’s group pivots tactics, leveraging battlefield chaos to secure first-phase success. During the exam’s disaster-response phase, they coordinate evacuations and neutralize threats from Gang Orca’s forces with calculated efficiency. Post-graduation, Shikkui enters Pro Hero work after the Final War, aiding the siege on Skeptic’s stronghold to dismantle All For One’s network. His evolution from tactical student to decisive field operative highlights his strategic growth. The Ultra Analysis Book rates his physical power and speed as moderate (3/6, C), technique at 4/6 (B), while his wits (5/6, A) and Quirk mastery (5/6, A) underscore a sharp mind adept at adaptive combat strategies.