Later Gens kicks the type further down in viability with the release of more Fighting, Steel and Ghost types and moves as well as the nerf to Explosion and Self Destruction in Gen 5 to no longer halving the enemy Defense. With the addition of the ubiquitous Steel type resisting Normal and also sharing Normal's weakness to Fighting, as well as the nerf to Hyper Beam to no longer skip the recharge turn and the releasing of more Ghost types, causing some of the metagame defining Normal types like Tauros, Chansey and Persian to fall off a cliff in usage, though Snorlax was still overwhelmingly dominant. However, the changes in Gen 2 which buffed Fighting and nerfed Psychic also severely hit Normal. The Normal type also has the extremely broken Hyper Beam as STAB, a 150 base power move that required its user to recharge for their next turn but in Gen 1 the recharge turn can be skipped if you KO the enemy. The only two types that resist or are immune to Normal have issues of their own, with Rock having extremely exploitable weaknesses that Normal types can run them over with coverage moves or teammates (most notably Ice, Ground and Water), while Ghost was extremely rare (with the Gastly line being the only representative of the type at the time). note Up until Gen 3, the best Fighting type move with wide distribution was Submission, an 80 power attack with 80% accuracy and recoil damage. In addition, Fighting Type moves in early generations were either weak or poorly distributed compared to other generations. Gen 1 had the Normal type dominate the metagame with three of its members (Tauros, Chansey, Snorlax) being considered essential in teambuilding due to the extremely broken Psychic type discouraging the use of Fighting types, which is Normal's only weakness. The viability of the Normal type has had an extreme fall from grace since Gen 1.And some are even high-level Olympus Mons that are outclassed by a newer Legendary sometimes by a different form of themselves yet remain too powerful to leave Ubers. Some have a base form that's not strong enough for OU, but a ridiculously overpowered Mega form to the point that it's Uber. Several cases are in the BL (Borderline) tier, meaning that they are outclassed or outperformed in OU, but too strong for UU. Some cases were high tier scrappies that fell to the opposite end due to Power Creep, nerfs, and/or changes in mechanics. Over the years, several Pokémon, types, and moves have gone both ways as tier-induced scrappies, especially in competitive play.