Good Ear (グッドイヤー Guddo Iyā?): Sirius' Quirk allows her to hear high frequencies and quiet sounds that normal people cannot. This allows her to communicate with Selkie, even when they are far distances apart.[1] Sirius (シリウス Shiriusu?) is a Pro Hero working as a sidekick on the Oki Mariner under Captain Selkie.