At first it looks like this pet is only filler for an achievement, but he does carry some utility in battles, especially a few of the daily ones. His Cute As A Button ability gives him 25% dodge for the duration, and Itchin' For A Stitchin' is a pet swap done at the Plushie's speed (Either the second pet slot or your highest HP pet I haven't worked it out yet), rather than prioritised first. This slow switch can be used to tank a massive attack, especially with his massive HP pool.
At first it looks like this pet is only filler for an achievement, but he does carry some utility in battles, especially a few of the daily ones. His Cute As A Button ability gives him 25% dodge for the duration, and Itchin' For A Stitchin' is a pet swap done at the Plushie's speed (Either the second pet slot or your highest HP pet I haven't worked it out yet), rather than prioritised first. This slow switch can be used to tank a massive attack, especially with his massive HP pool.