Ikazuchi embodies the historical Imperial Japanese Navy destroyer of the same name. She is an Akatsuki-class destroyer serving in the Sixth Destroyer Division with Akatsuki, Hibiki, and Inazuma. Her appearance features short brown hair with a left-side hairclip, brown eyes, a visible fang, and the standard Special-Type Destroyer serafuku uniform, distinguished by a "III" pin on her collar signifying her class.
She possesses an energetic and confident personality, frequently encouraging others to rely on her support. This is reflected in dialogue lines such as "Commander, I'm here for you!" and "You can depend on me even more, you know?" Her library introduction recounts participating with Inazuma in rescuing survivors from sunk enemy ships during the Battle of Surabaya, emphasizing her belief that "strength alone isn't enough." This references the historical action on March 2, 1942, when the actual destroyer Ikazuchi, under Lieutenant Commander Shunsaku Kudo, risked submarine attack to save 442 British and American sailors, an act largely unknown until documented by a rescued sailor in 1996.
Her close bond with Inazuma is notable; both ships were laid down on the same day, leading to their frequent depiction as twins in franchise media. Interactions within the Sixth Destroyer Division show occasional conflicts, particularly with Akatsuki, often arising from minor incidents like kitchen mishaps that distress Inazuma.
Gameplay reflects her historical destroyer role. Her initial form equips a 12.7cm Twin Gun Mount, while her remodel at level 20 gains enhanced stats and carries a 61cm Triple Torpedo Mount alongside a Type 94 Depth Charge Projector. Specific equipment combinations involving certain gun mounts, torpedoes, or radar systems trigger stat bonuses.
The character inherits the ship's memories and experiences, including its wartime fate. Official and derivative works explore this aspect, with one doujinshi, "The Things She Saw," portraying her grappling with traumatic recollections of naval combat and loss. Her sinking line reflects the historical vessel's demise on April 14, 1944: "Commander...where are you...? I can't hear your voice anymore..."