Greiz (Anime)

Greiz (グリーズ) is a former Marleyan soldier who served on Marley's Navy and is part of a survey fleet sent to Paradis Island after the failed Paradis Island Operation. After being taken captive on the island, he begins working as a waiter in a restaurant inside the Walls.

Appearance
Greiz is a young man with grey hair, which is kept closely shaved. He had originally only been seen wearing waiter's clothes.

Personality
Greiz seems to be a very cold man, feeling no qualms about betraying Niccolo due to the latter's friendly attitude towards Eldians.

War for Paradis arc
Greiz is among the Marleyan soldiers who are dispatched as part of a fleet to survey Paradis Island, and is summarily captured by the Eldians living on the island. He is put to work as a waiter in a restaurant run by his fellow soldier Nicolo.

While waiting on a group of Military Police Regiment officials, Greiz is ordered to bring them more wine, and goes to retrieve a specific bottle from Nicolo.

When a group of officers from the Scout Regiment come to visit Nicolo at his restaurant, Greiz tells Niccolo and contacts the Jaegerists to inform them of the officers' location. After the group arrives, Greiz helps them arrest the Scout officers. The officers try to warn them about the threat posed by Zeke's spinal fluid being distributed throughout the Walls, but Greiz dismisses the threat as a mere theory dreamed up by Nicolo.