Keith Shardis was the head instructor of 104th Trainees Squad. He seemed to be a friend or have some sort of relationship with Dr. Grisha, as he knew Eren is the son of the doctor and praised Eren for his effort. He is a former Commander of the Survey Corps, and was in command when Wall Maria fell in 845. First Appearance Manga: Ch. 15 "One By One" Anime: Ep. 1 "To You Two Thousand Years Later" (Source: Shingeki no Kyojin Wikia)
Sharle is the daughter of Dario Inocencio, and the younger sister of Xavi.
A penguin who's always seen accompanying Shouma. He is perpetually hungry, eating anything and everything in reach. He has a vendetta against bugs, particularly cockroaches. He sprays them with bug spray whenever possible. He is sometimes seen spraying things other than bugs, hinting he may just like spraying things.
A penguin with a red bow and long eyelashes. She's always seen accompanying Himari. #3 enjoys knitting, dressing up, and cooking with Himari. She seems much more reserved than her other penguin counterparts.
No.3 is actually three people with one playing the role of Kortik No.3. This pig-tailed killer has a great pleasure in her kills and wants to kill Alyosha to prove she is the best. She is Alyosha's clone.