With 200,000 health at base strength magnification, Ovis is a tanker of the Pokopang group. At his strongest (Rainbow Blast at 3-star difficulty), he'll have 400,000 health. In addition to all of this he only has one knockback.
There is not much one can do to Ovis besides deplete his enormous health pool with many attackers. Hip Hop Cat's range is on par with Ovis' and can always take at least the very first hit from Ovis if his True Form has been unlocked. Fencer Cat would be complementary to Hip Hop because Fencer Cat can outrange Ovis and still do some good damage. But if Ovis is with other Pokopang members, such as Pokota and/or Coco, Crazed Bahamut Cat should also be present to keep them at bay.
Time between attacks
3,000 damage (1,111.11 DPS)
220 (Area Attack)
0f (81f attack frequency)
27f (54f backswing)
*In each stage, there is strength magnification, the value of health and attack power varies due to this value.
*Time between attacks is the time of the attack from the motion end until the next attack motion start