Entei

Entei's main function in GSC is to break through the opposing team's defenses with its powerful sun-boosted Fire Blast and complementary Solar Beam. Unlike its more powerful Fire-type competitor Moltres, Entei is quite bulky, has no Electric weakness, and has base 100 Speed, which makes it possible for it to defeat Zapdos and Raikou, two of the best Pokemon in the tier. Unfortunately, even with sun up, Entei fails to land the crucial guaranteed 3HKO on Snorlax that Moltres can achieve. Additionally, Moltres's immunity to Ground gives it a chance to defeat Nidoking and allows it to destroy most Steelix sets, whereas Entei struggles to switch in.