Cerisa is an artist and streamer that loves to engage with her chat by making them feel welcome. She is known for unintentionally crashing games in most of her streams. Cerisa likes to make herself suffer if it means she can laugh about it with her viewers. Behind the scenes she's known for being a workaholic.
Cerisa's lore is fuzzy, all that is known is that she is capable of piloting a giant mecha and insists on collecting "payloads" to bring back to "base". However, it sounds like she's doing this automatically out of habit as there may not even be anyone else left at the base.