I've been busy lately so I haven't had much time to do runs. I believe Van Roekel is the fastest character to use as of now. I tried as Paragon but it's faster as Van Roekel.

Van Roekel has a specific trick that allows you to do a lot of damage quickly without draining your super meter, by doing a regular attack followed by a super attack. If you try this, your attacks will likely be less accurate as the game will auto-target objects instead of your opponent