In Vs. Slowbro, Solidad chooses Slowbro to train with Brendan's Onix. Onix practiced using Bind, while Slowbro used Psychic to spin around the battlefield to dodge. Onix snags Slowbro in Bind at the end, Solidad calling a halt to the battle.
In Vs. Kanto Grand Festival, Solidad chooses Slowbro for the preliminary appeal round of the Grand Festival. It used Psychic to spin like a top and become a blur.
In Vs. Natasha, Slowbro teamed up with Pidgeot to battle Brendan's Spinda and Wobbuffet. It matched Spinda with its spinning Psychic, and overwhelmed Wobbuffet with Hyper Beam. After Spinda's Teeter Dance failed, it achieved a double knockout with Hyper Beam.
In Vs. Mega Aerodactyl, Slowbro Mega Evolved for the first time to battle Natasha's Mega Sableye. Its attacks were useless against it with a type immunity and a Magic Bounce reflecting Yawn. Mega Slowbro fell asleep and was defeated.
In Vs. Mega Army, Mega Slowbro rampages along with the other Mega Evolutions and fights against its trainers.
In Vs. Mega Gyarados, Mega Slowbro contines to rampage. Its Mega energy is drained by Lysandre Labs later.