Grim

Grim is a magic-wielding monster who serves as Yuu's partner. He has a big mouth, and easily gets carried away.

Appearance
Grim very closely resembles a cat. His fur is grey with a white patch on his chest and pink paw pads, and he has electric blue flames blazing from his ears. His eyes are also bright blue. Around his neck, he wears a black-and-white striped bow tie which is torn at the ends; it also bears a light purple gemstone that rests against his chest. His tail is shaped like a pitchfork.

Personality
The first time Yuu met Grim, he has an impression of being incredibly devilish and mischievous, causing trouble wherever he goes. It is also noted that Grim would do things to extreme lengths to achieve the things he desired, such as burning the welcoming ceremony hall to show off his magic in an attempt to get accepted into NRC. He is somewhat shown to be quite narcissistic and prideful, often bragging about his magic abilities. He is noted to also like getting attention from people, as he joined the Magical Shift tournament just so he can get exposure through the show. Aside from that, he is also somewhat easy to impress and quite curious about things he is unfamiliar with, such as learning about the 7 figures of NRC. He is also surprisingly easy to taunt, such as when Ace insulted the (soon-to-be) Prefect and Grim for not knowing who the 7 villainous figures are. Grim is shown to enjoy teasing people around him, most notably the player, Ace, Deuce, and other people as such. As the story progresses, he starts to enjoy the company of his friends and the prefect.

When Grim ate the black stone from the leftover from Jamil's overblot, he starts to act very strangely and became addicted to eating more black stones. Grim's behavior becomes more unstable after he ate the stone left from Vil's overblot and grows more hostile. When he sensed Yuu nearby at the colosseum, Grim attacked Yuu in his belief that they were there to steal the stone from him. After he gets knockedout and regains his sanity by Ortho, he has no memories of actions of hurting Yuu.

Skills and Magic
Grim can only use fire magic since he can't use any other elemental type magic besides his own. It is currently unknown if he's capable of using his own unique magic or not, due to being a monster.

Blot corruption: However, as Grim keeps eating the crystalized blot with a total of six, his magic powers become stronger and yet unstable as it corrupts his mind. He is capable of using dark magic (under the crystal of blot's influences) which was shown in the in-game battle of Chapter 6. Grim becomes feral again after he gets exposed to the high amount of blots. As a result, his strength increase and he manages to tear down the door in his room.

Trivia

 * His name may be a reference to Grimm's Fairy Tales, a popular fairytale collection that includes the tale of Snow White, Sleeping Beauty, and many more. Although it can also be the abbreviation of grimoire (a type of book of European magical knowledge, generally dated from the middle of the Late Middle Ages)