Kos

Sentinel Sor-16D-Idos-02, codenamed Kos, is a calm and friendly Sentinel. He is capable of rolling into a ball, breaking into separate pieces, and turning into something akin to liquid mercury, allowing him to slip into small spaces, for extended period of time, much longer than all the others who can. He currently resides on the top floor of Ender's Air Base, where he will occasionally slip a hand down to maintain the engine. He is normally opposed to fighting.