Krookodile first appeared as a Sandile, known as Sunglasses Sandile because of the sunglasses it wore, in A Sandile Gusher of Change and Here Comes the Trubbish Squad! until it evolved into Krokorok in Dancing With the Ducklett Trio! while battling Ash's Pikachu. It blasted off after getting defeated in both BW012 and BW020, sparking a rivalry with Pikachu. It was also set to reappear in BW023, however it was postponed.
In BW070, Krookodile battled against Skyla and her Swoobat and was defeated with Air Cutter. In BW080, he and Ash did some training with Brycen and his Beartic. In BW081, it was used in the Icirrus City Gym where he was used against Brycen's Vanillish but was quickly recalled. He was later used against Brycen's Beartic where he won, winning Ash the Freeze Badge.
|Bite||A Sandile Gusher of Change|
|Dig +||A Sandile Gusher of Change|
|Stone Edge +||Here Comes the Trubbish Squad!|
|Crunch +||Battling the Bully!|
|Dragon Claw +||BW094|
|+ indicates this Pokémon used this move recently.*|
- indicates this Pokémon normally can't use this move.
- He was set to appear in BW023 but the episode, along with BW024, was postponed until further notice.
- Prior to capture, Krookodile seemed to have inherited the blast off gag from Team Rocket.
- Krookodile, like other recurring Pokémon, has an item it carries around, its sunglasses, but was the first to have been caught by Ash Ketchum.
- Krookodile is Ash's second Dark Pokémon, the first being Scraggy.
- It is the second evolved Pokémon Ash caught in Unova. The first being Palpitoad.
- Krookodile is the third Pokémon that Ash caught who had an accessory, the first being Squirtle (they both have Sunglasses) and the second being Sceptile (who had a twig).
- When the sunglasses that Krookodile wears are knocked off, it seems to always have a nervous breakdown, suggesting it may be a comfort object, which is supported in BW067.
- Krookodile is the second Pokémon owned by a main character to always wear something, the first being Dawn's Buneary who wore a sleeveless jacket outside of battle.
- Krookodile is the fourth pokemon to follow Ash around before being captured. First was Aipom, second was Gible, and third was Oshawott.
- Krookodile is the second Pokemon that evolved prior to its capture, the first being Ash's Primeape. However, Krookodile was captured long after it evolved, while Primeape was caught in its debut.
At Oak's Lab
At Kukui's house
At Cerise Laboratory