Sure. In fanfiction, the sky's the limit when it comes to giving powers to characters. Batman might be depicted with the power of flight, which would completely change the way he approaches fighting crime. He could swoop down on criminals from above, much like a bat. Robin could have the power of invisibility. This would make him an excellent spy within the criminal underworld. He could gather information without being detected, giving Batman and him an edge in their fight against evil.
Batman might be given the power of regeneration in fanfiction. This means that if he gets injured, his body heals at an extremely fast rate. It makes him even more difficult to defeat. Robin could have the power of animal communication. Since he's associated with the bat theme, he can communicate with bats and other animals in Gotham. The bats can act as his eyes and ears in different parts of the city, providing him with valuable information about criminal activities.
Sure, Echo has powers. She can replicate the physical actions and skills of those she observes, which gives her a unique edge in battles and situations.
Trish has powers in the comics. Her powers typically involve enhanced strength, agility, and sometimes energy manipulation. These powers help her face various challenges and threats in the comic world.
Reigen does have powers in the manga, but they are often presented in a more subtle and unique way. His abilities might not be straightforward combat skills but could involve manipulation or perception.