Regigigas. Learns the move Crush Grip, but if an enemy is at low health it does little (so they'd survive as the battle went on), and Slow Start cuts Attack making it also useless. The older ones are the three other Regis, who are perceived as more useful as they lack the ability. The close friend may be a reference to the Dream World, as the three other Regis get new abilities but Regigigas cannot get rid of its own, harmful one.