Which One ~ Is It?

Which One ~ Is It? (Japanese: ドッチ～ニョ？ Dotchi ~ Nyo?) is the fifth ending theme of the. It debuted in DP145, replacing Get Fired Up, Spiky-eared Pichu!. A second cut with different lyrics debuted in DP170. It was replaced by In Your Heart, LaLaLa in DP183.

DP145 - DP169
A light purple curtain unfolds, then, , , and point to the right, and then to the left. All four Pokémon are shown thinking and confused. Buneary and Pikachu point up, Piplup and Croagunk point down. All four make a superman pose. Then, all four are shown in a scene with their heads in the corners. and meditate and duplicate. Four polygons containing Buneary, Piplup, Pikachu, and Croagunk show and spin. They show expressions of happiness, anger, sadness, and excitement. Pikachu walks and does poses with his hand behind his back. Piplup spins on one foot then tucks his leg out and puts his hand out. Buneary flips and sways, then stretches its arms. Croagunk makes a cross with his hands and raises it and then sways his hands behind his legs continuously. All the Poké Balls from Sinnoh are shown under 4 spotlights. Buneary, Piplup, Pikachu, and Croagunk raises their hands. Bubbles appear with different Pokémon in them. is shown fishing while a East Sea rises from the water. A puts its foot down and Buneary, Piplup, Pikachu, and Croagunk stare at it in wonder. A sits alone in a yellow background when it starts to sweat increasingly as its face is shown closer. Then, Psyduck falls over. Buneary, Piplup, Pikachu, and Croagunk dance at the bottom, while and,  and ,  and ,  and ,  and Looker dance at the top. Looker's face expands. Buneary, Piplup, Pikachu, and Croagunk pauses, pointing in different directions. They continue dancing, and pauses, pointing in different directions in three different shots. They finish off with 4 arrows (←↑→↓). Three of four arrows disappear and the screen goes to the remaining arrow's direction. Different pictures are shown for different directions.

DP170 - DP182
A light purple curtain unfolds, then Buneary, Piplup, Pikachu, and Croagunk point to the right, and then to the left. All four Pokémon are shown thinking and confused. Buneary and Pikachu point down, Piplup and Croagunk point up. All four make a superman pose. Then, all four are shown in a scene with their heads in the corners. Medicham and Meditite meditate and duplicate. Four polygons containing Buneary, Piplup, Pikachu, and Croagunk show and spin. They show expressions of happiness, anger, sadness, and excitement. Pikachu walks and does poses with his hand. Piplup spins on his legs and does a split. Buneary flips and sways, then stretches its arms. Croagunk waves his hands in the air while dancing. Team Rocket are in a garden when a and  appear and use  on them. Two Pokémon are in the shadows with their eyes lighten up, which later reveals to be a and a. They fire off on Team Rocket as they run. A is looking at its reflection in the river. Multiple are on a patch of grass. The Pokémon world is shown. A sits alone in a yellow background when it starts to sweat increasingly as its face is shown closer. Then, Psyduck falls over. Buneary, Piplup, Pikachu, and Croagunk dance at the bottom, while and,  and ,  and ,  and ,  and  dance at the top. Buneary, Piplup, Pikachu, and Croagunk pauses, pointing in different directions. They continue dancing, and pauses, pointing in different directions in three different shots. They finish off with 4 arrows (←↑→↓). Three of four arrows disappear and the screen goes to the remaining arrow's direction. Different pictures are shown for different directions.

Characters

 * (Up and Right variants)
 * (Up and Right variants)
 * (Up and Right variants)
 * Jessie
 * James
 * Looker (DP145 to DP169)

In all versions

 * (Up variant)
 * (Up variant; DP146, DP150 and DP155)
 * (Up variant; DP146, DP150 and DP155)
 * (Up variant)
 * (Up variant; DP146 and DP150)
 * (Up variant; DP172)
 * (Up variant)
 * (Up variant)
 * (Up variant)
 * (Up variant; DP172)
 * (Up variant)
 * (Up variant)
 * (Up variant)
 * (Up variant; DP172)
 * (Up variant)
 * (Up variant)
 * (Up variant)

DP145 to DP169
Not in bubbles
 * (submarine)

In bubbles
 * (West Sea and East Sea Forms)
 * (West Sea and East Sea Forms)

DP170 to DP182

 * (multiple)
 * (multiple)
 * (multiple)
 * (multiple)
 * (multiple)
 * (multiple)

DP145 - DP169
! Japanese ! English
 * lang="ja" | 
 * lang="ja" | 

 Or rather~ grazie~ are you thinking? Which~ is it? Which~ is it? Which, which, which~ is it? Which~ is it? Which~ is it? Which, which, which~ is it?
 * ''That~ one, this~ one, which~ one?

", " "Chitosan and " Do you know the difference between "~" and "~"?

Confusing, puzzling, but it's fun, isn't it! Get Pokémon and walk ! Which sea has the blue ? Is 's leg the left or right one?

Ahhhhhhh~ Ahhhhhhh~ Ahhhhhhhh~ Ah~ Ah~

Which~ is it? , Which~ is it? , Which~ is it? , Which~ is it? , Which~ is it? , Handsome Which~ is it? Which is it today? Which~ is it? Is it up or down? Which~ is it? Is it left or right? Which~ is it? Which~ is it? Which~ is it? Which~ is it? Up~!! / Left~!! / Right~!! / Down~!!''
 * }
 * }

DP170 - DP182
! Japanese ! English
 * lang="ja" | 
 * lang="ja" | 

 Or rather~ grazie~ are you thinking? Which~ is it? Which~ is it? Which, which, which~ is it? Which~ is it? Which~ is it? Which, which, which~ is it?
 * ''That~ one, this~ one, which~ one?

"Mokutan and " ", " Do you know the difference between "" and ""?

, Which one is your favorite? and ; be careful in the dark! Which way does 's swirl spin? "'s nose, which is north???"

Ahhhhhhh~ Ahhhhhhh~ Ahhhhhhhh~ Ah~ Ah~

Which~ is it? , Which~ is it? , Which~ is it? , Which~ is it? , Which~ is it? , Which~ is it? Which is it today? Which~ is it? Is it up or down? Which~ is it? Is it left or right? Which~ is it? Which~ is it? Which~ is it? Which~ is it? Up~!! / Left~!! / Right~!! / Down~!!''
 * }
 * }

Full version
! Japanese ! English
 * lang="ja" | 
 * lang="ja" | 

 Or rather~ grazie~ are you thinking? Which~ is it? Which~ is it? Which, which, which~ is it? Which~ is it? Which~ is it? Which, which, which~ is it?
 * ''That~ one, this~ one, which~ one?

"Nidori~na, Nidori~no" "Chitosan and Tosakinto" Do you know the difference between "Foresight~" and "Odor Sleuth~"?

Confusing, puzzling, but it's fun, isn't it! Get Pokémon and walk Victory Road! Which sea has the blue Karanakushi? Is Hoho's leg the left or right one?

Which~ is it? Tamanta, Tamatama Which~ is it? Beadaru, Beedle Which~ is it? Laplace, Lovecus Which~ is it? Mankey, Mammoo Which~ is it? Hassam, Handsome Which~ is it? , Which~ is it? , Which~ is it? Which~ is it?

"Mokutan and Octank" "Mirror Coat, Counter" Do you know the difference between "Bide" and "Endure"?

Kusaihana, Kireihana Which one is your favorite? Yamirami and Yamikarasu; be careful in the dark! Which way does Nyoromo's swirl spin? "Nosepass's nose, which is north???"

Ahhhhhhh~ Ahhhhhhh~ Ahhhhhhhh~ Ah~ Ah~

Which~ is it? Palkia, Balkie Which~ is it? Kinococo, Waninoko Which~ is it? Dogars, Dogohmb Which~ is it? Metang, Metamon Which~ is it? Pixy, Yuxie Which~ is it? , Which~ is it? , Which~ is it? Everyone, all together! Which~ which~ which~ is it? Which~ is it? Which~ is it?''
 * }
 * }

Variants
In both versions, the last sequence changes according to the chosen direction: Up with Pikachu, Left with Buneary, Right with Croagunk and Down with Piplup.
 * 1) DP145 - DP169: Version 1
 * 2) DP170 - DP182: Version 2

These variants appear in the following episodes:
 * Up Variant (with Ash's Gliscor)
 * DP145
 * DP150
 * DP152
 * Up Variant (without Ash's Gliscor)
 * DP155
 * Up Variant (featuring Ash's Gible, Ash's Torterra, Ash's Infernape and Dawn's Togekiss)
 * DP172
 * DP177
 * DP178
 * DP182
 * Left Variant
 * DP146
 * DP147
 * DP153
 * DP154
 * DP158
 * DP161
 * DP165
 * DP168 - DP169 (One-hour special; both animation and live-action PV were shown together at the same time)
 * DP170
 * DP173
 * DP179
 * Right Variant
 * DP148
 * DP151
 * DP157
 * DP162 (both animation and live-action PV were shown together at the same time)
 * DP163
 * DP167 (both animation and live-action PV were shown together at the same time)
 * DP176
 * DP181
 * Down Variant
 * DP149
 * DP156
 * DP159 (Live-action PV is shown)
 * DP160 (Live-action PV is shown)
 * DP164
 * DP166 (both animation and live-action PV were shown together at the same time)
 * DP170 - DP171 (One-hour special)
 * DP174
 * DP175
 * DP180

Trivia

 * A live-action promotional video for the song was aired with DP159 and DP160 in place of the regular ending animation.
 * DP162 and DP166 to DP169 aired the PV alongside the normal animation.
 * From DP170, a new version of this ending was used. The lyrics of the song is of the second half of the full version, but kept the last few lines of the TV version. Some screenshots were changed in order to associate with the lyrics of the song.