A Hareraiser is a small creature with a small resemblance to the Tornado Step Heartless and the Me Me Bunny. Its skin is predominantly black. It has a wide lower body with a comparatively thin neck. Its body has two short spikes for legs and lacks arms. Its head is large, round, and has two long, floppy "ears", both of which end in a wide fleur-de-lis. The tip of the Hareraiser's outer ears are dark red, while the tip of its inner ears are pink. Its red eyes are set in a sorrowful expression and the Unversed logo is on its chest.
In Kingdom Hearts Birth by Sleep Final Mix, the Hareraiser receives a new coloration, giving it an almost completely white body with turquoise inner ears.
The name "Hareraiser" is a pun on the common phrase "hair raiser", an event is said to be so intensely frightening that it makes the hairs on the back of one's neck "stand up".
One of the weaker Unversed, its only two attacks are to smack players with its ears or spin and shoot lasers from them. But overall, it can be defeated with little effort. However, Hareraiser Unversed very often appear in packs of several Unversed, so long-range magic spells such as Mega Flare and Deep Freeze are a great way to take several of them out without getting bombarded by lasers. To make things easier without magic, use Guard to deflect its lasers and send it back at the attacker.
The Hareraiser is one of the few types of Unversed first encountered by Aqua in the earliest stages of the game. Being at a low level makes her vulnerable to attacks that could kill her in two hits. Stick with Bubble Blast, Blizzard or other long-range spells, but beware that once a Hareraiser is hit, it will chase her relentlessly. Keep a reasonable distance away from the pack of Hareraisers at all costs.