Brielle

Brielle (also know simply as the "Commander") is a character that can be found in the tunnel at Nerd City.

At night time, she will be a hidden boss that can be fought inside one of the houses in Straight Down City, revealing herself as a demon with the power of making everyone around her forget things.

In battle, she doesn't use any attacking moves, and istead, she makes a random character forget a skill that makes them unique (for example making Lenny forget healing skills, and Ying forgetting distracting skills).

If Lenny becomes the target multiple times, he learns the skill "Blank out", one of the most powerful ultimates in the game. If any other character becomes the target multiple times, they will forget who they are, and will leave your party forever, effectively the same as dying. Some characters like G0R5 and Maria are immune to forgetting.

If you activated the "BLOOD" cheat code, you must defeat her before reaching Erick.