Who's that Pokémon?

Who's that Pokémon? (だれだ？) is a question and answer segment of the Pokémon anime.

The original Japanese version has this type of segment with multiple variants, being called "Who's that Pokémon?" in the dub. The dub has a variant called Pokémon Trainer's Choice for many episodes of the Advanced Generation dub seasons, although the dub has no segment for Diamond & Pearl episodes. There are also episodes of the original version that would use a standard eyecatch in the middle of an episode rather than this type of segment.

From "In the Shadow of Zekrom!" and onwards, displaying Pokémon's text font is labeled with a ?.

Errors

 * During IL026: Pokémon Scent-sation! and IL069: The Pi-Kahuna, the textures for Glooms drool is located in the middle of its face.
 * In IL025: Primeape Goes Bananas, Primeapes nostrils are missing.

Errors

 * Similarly to IL025: Primeape Goes Bananas, Primeape's nostrils are missing in OI005: Fit To Be Tide.

Errors

 * In JE008: Snubbull Snobbery, Stantlers eyes aren't colored in.
 * In JE009: The Little Big Horn, Totodile is missing its nostrils.
 * In JE024: Wired For Battle!, one of Cyndaquils arms is missing.
 * In JE027: Going Apricorn!, one of Lugias fingers is missing.

Errors

 * In JE081: The Art of Pokémon, Beedrill is stated to be the evolved form of Weedle when it is actually the evolved form of Kakuna.

Errors

 * In JE121: As Cold as Pryce, the incorrect plural for Magnemite is used. It should be "Magnemite" instead of "Magnemites".
 * In JE124: Some Like it Hot, Mantine is stated to be the heaviest Generation II Pokémon when Steelix is actually the heaviest.

Advanced Generation
Starting at AG041: What You Seed is What You Get, the Who's That Pokémon? segments are replaced with Pokémon Trainer's Choice as the series eyecatch.

Errors

 * In AG002: A Ruin with a View, part of Crobat's lower-right wing is deformed.
 * In AG007: Tree's a Crowd, "tail" is misspelled as "tale".
 * In AG018: On a Wingull and a Prayer!, Sentret's face is missing.
 * In AG019: Sharpedo Attack!, "balloon-like" is misspelled as "baloonlike".
 * In AG022: A Hole Lotta Trouble, there is an extra picture of Vigoroth's foot.
 * In AG028: Seeing is Believing!, Wurmple has a white square on its body.
 * In AG036: The Spheal of Approval, there is an extra "in" in the clue sentence.