Eclipse

Eclipse is very overly excited as seen in her dialogue with Gourdy. She tries to get people more hyped and happier for the next floors. When she's in a Blackout, though, she seems to be more aggressive and unhinged. This is probably due to her werewolf form taking over in Blackouts, making her hunting instincts stronger. It seems her moon symbol on her forehead glows brighter in Blackouts too, illuminating her path and helping her "hunt down" the Twisteds. In a Blackout, she gets slightly bigger. This may mean that she gets stronger which is why she can run faster for longer periods of time.