Opening of the Monster City Arc[]
In Masayuki Honjou's flashback he mention an seeing a woman with blue hair and gold eyes passing by him prior to being sent to the Central World.
A Clash of Dragons and Monsters[]
Velgrynd was fighting against Veldora, Testarossa, Carrera and Ultima using her Parallel Existence skill and she won against the Three Devil Girls and fought to a draw against Veldora until Kondou and Michael took control over Veldora. She also used Spacetime Connection to bring the airships and the Magic Beast Division to the battlefield to face Rimuru's army