If you're up against one of the anime characters who use their enemy's attacks against them, you probably don't want to be too strong. Otherwise you'll find your own strength becoming your own worst enemy.
One example is Accelerator of A Certain Magical Index, who is able to reverse anything that touches the field of vectors surrounding his body, thus sending all attacks hurtling back towards their source without leaving a scratch on him. There's also Asta of Black Clover, whose anti-magic sword allows him to absorb magic and send it back to his opponent with a powerful energy slash.
Which of these characters has the coolest reflective abilities? That's up to you to decide.