Pela’s strong debuffs make her a great addition to any team, especially when she’s paired with a good light cone.
As a Nihility character, Pela is very popular because of her ability to remove buffs. This is especially true since this path in Honkai: Star Rail doesn’t have many choices. Her ultimate reduces foes’ DEF by a lot while dealing AoE ice damage, and her skill can remove buffs from a single enemy, which makes her useful in a lot of different situations.
Her main job is to weaken enemies, but she can also be used as a sub-DPS and toughness-breaker when paired with characters like Asta, especially against enemies that are weak to them. Choosing how to build Pela and which light cone to use in Honkai: Star Rail depends on the player’s style and the way their team is made up, but she has a lot of great choices no matter what.