The Starred Alien version of Croakley has much lower health and range, but has a guaranteed chance to warp cats and has a barrier with a breaking point of 65,000. Not too differently than Corporal Weyland, he warps cats from Long Distance while relying on a barrier to keep him safe, with the main difference being an even stronger reliance on these abilities, as Ribbo usually dies almost as soon as his barrier breaks due to his pitifully low health.
When there is an opening to reach Ribbo, use low range Barrier Breakers like Space Cat or Fencer Cat to easily break the barrier. Unfortunately, this won't happen easily. Erphuan and Gravi can usually destroy this enemy in most situations with their abilities, while Major Leaguer Cat is a non-gacha alternative. If the frontline is pushed back enough, it becomes possible to use the Breakerblast cannon, then to easily dispose of this enemy with waves.