In my conjecture, Regigigas is a pretty fascinating pokémon. It's the leader of the three Regi's and to me, I would think it's the best one out of the trio. Regigigas's ability to communicate via Telepathy was overwhelming. Slow Start was a pretty good ability seeing as it would be fair to do that as Regigigas has high stats in Attack. Regigigas's pokédex entry states that there is a legend that tells us that Regigigas has towed through continents with ropes. I thought that was a rather cool legend, and to me it's really amusing in a good way.