Mega Cat EX is similar to Mega Cat in terms of stats, but Mega Cat EX is a lot more effective in the battleground. They have the same attack animation length, speed, knockbacks and attack power, but EX has a shorter delay between attacks, more health, longer range and (in consequense) higher DPS.
It supports Black, Angel and Red enemies in the stages it appears in, purely rush units, you have to prevent its advance at all costs, which will be more difficult due to its overall stats improvement.
Mega Cat EX (Enemy)
99,999 damage (7,518 DPS)
1500 (Area Attack)
160f (141f backswing)
*In each stage, there is strength magnification, the value of health and attack power varies due to this value.