Mr. O Power (better known as Mr. Bonding. In fact, it actually is his name xD) is found in the following locations.
>Route 5
Attack Power
Defense Power
HP Restoring Power
Capture Power
>Anistar City Pokémon Cente
Exp. Point Power
>Cyllage City Hotel
Prize Money Power
>Camphier Hotel
Sp. Attack Power
>Ambrette Hotel
Sp. Defense Power
>Dendemille Town Pokémon Center
Accuracy Power
>Geosenge Hotel
Speed Power
>Befriending Power
Laverre City Pokémon Center
Encounter Power (NOTE: cannot be sent to other people)
>Couriway Town Hotel
Stealth Power (NOTE: cannot be sent to other people)
>Snowbelle City
PP Restoring Power
>Lumiose City - Hotel Richissime
Bargain Power
>Shalour City - Pokémon Center
Critical Power
Hope I helped. :)
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