Sun and moon.

Moondrop takes over Sundrop’s shift when it is night; and Sundrop takes over Moondrop’s shift when it is daytime and the afternoon. Sundrop is upbeat, energetic, and friendly, but he can also be strict when he needs to be. Moondrop is malevolent, aggressive, and strict. They both have OCD. Moondrop and Sundrop are both strict with rules, but Moondrop is more violent while enforcing them. They both are very flexible. They both are animatronics.