S128 is a special platoon for students of high skills. Most of the students are important people in the floating city academy as all of them are instructors of other platoons. They are the highest rank in the Guardian system.
The role of the students in S128 are mainly on important and dangerous tasks. All their members are high ranked and skillful. Most of them are instructors.
- Chloe Sevegny
- The Current Squad Captain of S128.
- Lloyd Allwin
- One of the members of the S128 squad.
- Yuri Flostre
- The youngest member of the S128 Squad, she later becomes an indirect member of the E601 squad after losing a bet with Kanata.
- Kanata Age
- He is a former member of the platoon and was demoted due to him skipping out on his missions and ranking matches.