Pokemon Best Wishes! Season 2: Decolora Adventure - Dent to Takeshi! Gyarados no Gekirin!!

Dent and Takeshi! Gyarados's Outrage!! is the first spin off of the Best Wishes series of the Pokémon anime.
(Source: Bulbapedia)

Dent is one of the three gym leaders of Striaton City. He is the brother of Pod and Corn, his fellow gym leaders. He is recognized as an A-rank Pokemon Sommelier, a person who has the ability to check the compatibility and closeness between a trainer and his/her Pokemon. After being defeated by Ash in a gym battle he decided to join Ash through his journey in the Unova Region. He is the group's navigator and cook.  Dent has a love for playing detective and trains. He enjoys solving mysteries with scientific explanations, and he is a huge fan of Nimbasa City's subway system. He dislikes the Pokemon Purrloin, saying he had a bad experience with one in the past, but refuses to talk about it.  Dent's vintage Pokemon is his Pansage. He has also acquired a Dwebble, which has evolved into a Crustle, and a Stunfisk while traveling.

Dent

Takeshi is known as "Brock" in the English Pokémon series.  He is the former gym leader of Nibi (Pewter) City who gives up his position to travel with Satoshi (Ash) and Kasumi (Misty) on their journey to catch Pokémon. He aspires to become a top class breeder. He has a weakness for pretty girls and ends up either getting dragged away by Kasumi, Max or stabbed by his Croagunk.  At the end of Diamond and Pearl, he's decided to part ways from Dawn and Ash to become a Pokemon Doctor.

Takeshi

Nurse Joy is a recurring character in every Pokemon series released.  There are multiple Nurse Joys in every town, city and region. They all look the same, have the same voice and personalities. There have been numerous speculations as to why all the Joys look alike, though it seems they are all related in some way.  However, there have been instances in which a Nurse Joy has been known to have a different personality and appearance (such as the aggressive sun-tanned Nurse Joy of the Orange Islands). Brock has an ability to tell each Joy apart based on minute details in their differences.  Each Joy works in the field of medicine, loves Pokemon and is extremely patient and caring. They are the heads of their respective Pokemon Centres.  A Nurse Joy's Pokemon choices are predominantly Chansey and Blissey: nurturing Pokemon that aid in the Pokemon Centres.

Officer Jenny is not a single entity. Rather, there are many Jennys working as police officers across the various regions of the Pokémon world.  Generally, Officer Jennies are brave and determined, but mostly ineffective in their police duties. They fight against the likes of Team Rocket, Team Magma, Team Aqua and Team Galactic - among other miscellaneous criminals. The town/region where a certain Jenny comes from can be discerned by the symbol on their hats which always differs depending on location.  Although Jennies appear mostly identical, there is some minor divergence among them, as evidenced by Brock, who is able to recognize different Jennies on numerous occasions. Brock appears to be the only character who can tell them apart. However, each Jenny has a different symbol on her hat that indicates location. There seem to be two Viridian Jennies, as during the Indigo League, two Jennies with the same hat symbol were seen side-by-side. (We know that the symbol in question--a star--indicates Viridian due to previous episodes.) One of the Viridian Jennies maintains a fierce rivalry with the Jenny of Eterna City.  Although there are many exceptions, Officer Jenny will generally have Growlithe to use as a police dog.  There is a very distinct parallel between the families of Officer Jenny and Nurse Joy. This may indicate some sort of relation or deeper connection, and fans have sometimes speculated about such. However, the only thing known about the two families is that they are apparently on good terms.  Ash's Squirtle was given to an Officer Jenny who fights fires. It is the leader of a group of four other Squirtle known as the "Squirtle Squad", who serve as the local firefighting team.  A young Officer Jenny named Marble appeared in Luxray Vision!. She was in charge of looking for "The Bandit Beauties Three." She was also voiced by Chinami Nishimura (è¥¿æ�‘ ã�¡ã�ªã�¿) in Japanese, but voiced by Meghan McCracken in English.  An Officer Jenny from Kanto appeared in Stealing the Conversation! with a Chatot as her partner. Apparently, she had come all the way to Sinnoh to capture Jessie, James, and Meowth.

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