O
- If you were looking for the glitch Pokémon, see O (glitch Pokémon).
- If you were looking for the Unown form, see Unown (Pokémon)#Form data.

O (Japanese: オウ Ō) is a character of the day who appeared in To Thine Own Pokémon Be True!.
He has a Ping Pong Training Center in Vermilion City. He traveled all the way to Sinnoh to participate in Sandalstraw Town's Pokémon Ping Pong Tournament, which he won. He is well-known for being an expert ping pong player.
After seeing Dawn's Ambipom's talent for ping pong, he invited her to train in his training center. After the tournament, Dawn asked Ambipom if she wanted to continue competing in Pokémon Contests or go practice Ping Pong at O's training center. After much contemplation, Ambipom chose ping pong and left with O.
Pokémon
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This section is missing information on this character's Japanese voice actor and English voice actor. Please feel free to edit this section to add this information. |
This listing is of O's known Pokémon in Pokémon the Series:

Shiftry, like O, is a very experienced player of Pokémon Ping Pong and along with O won the Pokémon Ping Pong Tournament two years running. It was able to knock Dawn, Barry and their Pokémon out of the competition and helped O win his second consecutive title.
None of Shiftry's moves are known.
Training

| Debut | Slaking Kong! |
|---|---|
| Voice actors | |
| Japanese | Chie Satō |
| English | Emily Jenness |
- Main article: Dawn's Ambipom
Ambipom had a natural talent for Pokémon Ping Pong and was noticed by O during the Pokémon Ping Pong Tournament. After assuming they were regular players, O couldn't believe they were beginners and during the tournament watched Ambipom closely. Even though Dawn was an average player, Ambipom helped her through to the semi-finals where they were eliminated by O and Shiftry. Afterwards O offered Ambipom a place at his Ping Pong Training Center in Vermilion City which she accepted later with Dawn's permission.
Pokémon competitions
O has competed in the following Pokémon competitions:
- Pokémon Ping Pong Tournament - Winner (One year prior to To Thine Own Pokémon Be True!)
- Pokémon Ping Pong Tournament - Winner (To Thine Own Pokémon Be True!)
Voice actors
| Language | Voice actor | |
|---|---|---|
| Japanese | 平川大輔 Daisuke Hirakawa | |
| English | J. Griff | |
| Czech | Libor Terš | |
| Finnish | Antti Timonen | |
| Norwegian | Scott Maurstad | |
| Polish | Waldemar Barwiński | |
| Spanish | Latin America | Ricardo Bautista |
| Spain | Ricardo Escobar | |
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This article is part of Project COD, a Bulbapedia project that aims to write comprehensive articles on each one-time character of the Pokémon animated series. |

