The Generation 7 (Sun & Moon/Ultra Sun & Ultra Moon) OverUsed (OU) tier is a high-power environment defined by Z-Moves, the "Tapu" Guardians, and Mega Evolutions. This report summarizes the core mechanics and dominant strategies of the meta as of April 2026. ⚡ Tier Mechanics & Trends

The following Pokémon are widely considered "S-Tier" or essential staples in the current metagame: Offensive Powerhouses Why Weather Teams are So Good in Gen 7 OU

High-stat pivots or sweepers like Mega Mawile , Mega Alakazam , and Mega Tyranitar remain central. 🛡️ Top Threat Analysis

The "Tapu" Pokémon ( Koko , Lele , Bulu , Fini) define the field with automatic Terrain effects.