This Red variant of Kory is almost the same, performing a medium attack and firing a Wave Attack. However, the Wave Attack range has been almost tripled, making it very hard to defeat. It only has one knockback, causing more Wave Attacks if you don't use any anti-Red cats. Luckily, it has lower range and movement speed.
Despite the waves, there are several units who can easily stall this enemy. Roe Cats, for example, have no issue holding Berserkory back plus they can lower the damage of its attack AND wave. Other units who can tank and slowly kill this enemy include Maximum the Fighter, Island Catandvariants, talentedUltimate Bondage Cat and Can Can Cat, to name a few. Note that most of the Red enemy tanks previously mentioned Berserkory can use as a stepstone in order to hit your other cats.
If you have iCat, then deploy 2 of them in out of sync timing. In doing so, you will render Beserkory powerless (granted there aren't any other main attackers for support), which you can then finish off easily. Wave Blockers such as Octopus Cat are very effective at blocking Berserkory's Shockwaves, allowing your units to get in close and destroy it. iCat, if paired with Octopus, pretty much nullifies Berserkory entirely.