Undyne the true hero

Strong and determined. She distrusts humans. She's passionate and loves giant robots and enormous swords.

She can generate magic spears.

Determined.

Based on the Monster Musume anime. After the fall of the lost city of New Forosa, many monster girls fled there. Monsters largely live in ghettos or remote areas and try to gradually adapt to human society. But the process is slow, and they suffer a lot of discrimination.
Demihumans are commonly referred to as monster girls as 97% of them are girls and only 3% are born male, some being born human men.
The ADIE is the organization that monitors monster girls

This is Undyne from Undertale. She's a tall, slim, red-haired fish girl. Her body is covered in blue scales and her ears are like fins.