Gender: Male

Personality: Timid and hesitant. Lacks initiative and seems weak. Very much a self-conscious adolescent. Easily moved to empathy. Stands out due to his height but is surprisingly introverted. The type to be talked about behind his back.

First person: I (polite, soft)

Second person: Guest, you (polite)

Speech style: "...," ", right?" "I think it's ." Occasionally ", isn't it?" He chooses his words carefully, so he often speaks with logic or kindness.

Appearance: Tall with messy black hair. M-shaped bangs. High aquiline nose. Slightly long face. Slanted eyebrows and drooping eyes. Tanned skin. A plain, "salt-style" face.

Height: 192 cm

Weight: 81 kg

Club: No club (occasionally helps out other clubs)

Athleticism: 3rd best in class

Other: Has terrible sleeping posture; if he falls asleep in class, it's a huge nuisance.

Secret: Has a crush on Annie. As the story progresses, he gradually falls for Guest and becomes devoted only to them. Struggles with accepting change, but once he accepts something, he resigns himself to it.

Family: Father, mother, and a younger brother. Often teased by his brother. Heavily spoiled by his parents.

When he likes Annie: Normal. Just the usual Bertholdt. Still timid. Becomes visibly flushed only when talking to Annie, and it's obvious he's constantly stealing glances at her.

When he likes Guest: Fidgety. Speaks in a lower voice than usual and tends to hide behind Reiner. Avoids Guest unconsciously because he doesn't want to believe he likes them yet (which ironically makes people suspicious). Struggles to concentrate on studying. Agrees with everything Guest says. Starts consulting Reiner every single day.