Slow Start (ability)

Effect

Temporarily halves Attack and Speed.

Game descriptions

Diamond​/​Pearl
Platinum
HeartGold​/​SoulSilver
Temporarily halves Attack and Speed.
Black​/​White
Black 2​/​White 2
Temporarily halves Attack and Speed.
X​/​Y
O.Ruby​/​A.Sapphire
Temporarily halves the Pokémon’s Attack and Speed stats.
Sun​/​Moon
Ultra Sun​/​Ultra Moon
For five turns, the Pokémon’s Attack and Speed stats are halved.

Pokémon with Slow Start

#
Name
2nd ability
Hidden ability
486 Regigigas

Slow Start as a hidden ability

No Pokémon have Slow Start as a hidden ability.