Blue Delmo Leader (青デルモリーダー Aoderumo rīdā) is the unnamed leader of the Blue Delmo.
Blue Delmo Leader is a young woman with short reddish-brown hair.
She is seen a couple times interacting with Neena Hagen, and later taking on Shivie Aika. However after her defeat she is no longer seen in the series, with the exception of a couple stills in the Special Trial.
- Blue Delmo Leader is seen in the blue bunny suit during the ending of Trial 3: Takeoff Position together with Delmo Commander. She looks similar to Bianca, so it may be possible the two might be the same person.