Gluttony

Gluttony causes the Pokemon to eat HP-triggered Berries at 50% HP instead of the usual 25% threshold. This means Berries like Sitrus Berry, Figy Berry, Wiki Berry, and other HP-restoring Berries activate earlier, providing recovery when the Pokemon is still relatively healthy.

The earlier activation is particularly valuable with the stat-boosting Berries (Liechi, Petaya, Salac, etc.) that normally require HP to drop to 25%. With Gluttony, these Berries activate at 50%, giving the Pokemon a stat boost while it still has significant HP remaining to take advantage of it.

Gluttony is found on 27 Pokemon including Snorlax, Munchlax, Appletun, and various Grass-type lines. Combined with Belly Drum (which cuts HP to 50%), Gluttony allows Pokemon like Snorlax to immediately consume a Sitrus Berry after maximizing their Attack, creating a devastating combo of maximum Attack with partial HP recovery.