I'm a big cat fan I own 4 cats myself! Here's my answers
The yellow cat is named Leo and has the power of points! Once activated star balls are randomly placed within the start of the level and helps achieve 3 stars easier.
The green cat is named Eri and has the power of the helping nero's power orb! Once activated eri will fill nero's orb to a certain amount depending in what level eri is it can be maxed!
The blue cat is named Lyra and has the power of the fairies! Once activated lyra will disperse a certain amount if fairies to orbs within the start of the level that can help pop random orbs.
The final red cat is named puck and has the power of the arcane. Once activated and depending on the level of puck the arcane bubbles will be randomly dispersed within the start of level.
All the cats powers also have a duration of 30 minutes.
1) Leo which Helps us to gain higher scores 2) Eri which Raises the Orb's power 3) Lyra which Helps us by adding Fairies 4) Puck which Adds Arcane Bubbles