Slowbro

Slowbro is one of the most powerful Pokemon in GSC UU. Its bulk and typing allow it to switch in and sponge attacks, while its base 100 Special Attack means that it can fire off powerful hits too. Access to Thunder Wave limits what even Pokemon with super effective moves can safely do against it. These factors mean that Slowbro can both offensively and defensively check many of the Pokemon in GSC UU. It can stick around for a long time with Rest and Sleep Talk, which allow its presence to be felt for most of the games that it is used in while also being able to absorb status-inducing moves for its teammates. When constructing teams and while playing games, one must always consider how to threaten an opposing Slowbro.