The Yo-Yo effect.

areee

If you have been at a High Noon event or taken on the Destroids Rise again even you have seen this happen with summons. They will charge enemies only to run back to the player. This doesn't seem to be caused directly by pets. It's a location thing.

If you could please find out what it is about these 2 locations, that does this while others don't, this summoner lover would be very grateful.