Pokemon High
Ash Ketchum:
Ash Ketchum is the main protagonist of the Pokémon anime series who has always dreamed of becoming a Pokémon Master. His journey was corrupted when he was sent to Destiny Islands, after his world fell into darkness. There, he met Sora and journeyed with him in search for his friends, along with RIku and Kairi. With there teamwork, Ash and Sora eliminated Ansem and he returned home with his friends. Now, he is back his next journey...takes him to school.
May Maple:
May is a young, energetic Pokémon Coordinator currently traveling through various regions to compete in Pokémon Contests. She met Ash, when arriving in Kalos but there reunion was cut short, when there world fell into darkness and May was casted off into another world. Her heart was put to sleep, waiting for someone (being Ash) to come and revive her. After defeating Ansem, she returned to Kalos and chose to stay by Ash's side.
Serena:
Serena is a Pokémon Trainer from the Kalos region and one of Ash's traveling companions. Her goal was to become a top-class Pokémon Performer but it was halt, when Kalos fell into darkness and she ended in another world, meeting Tarzan and Jane. She traveled with Ash and Sora to different worlds, searching for there friends and putting a stop to the darkness. With success, she returned to Kalos and now enrolls in a school along with Ash, May and Clemont.
Clemont:
Clemont is the Gym Leader of Lumiose City and one of Ash's companions. he traveled to different world with his friends to search for May and Serena and stop Ansem and his goal to spread the darkness. After defeating him, he and the others returned to Kalos. Now, he has enrolled in a school, with his friends.
Misty:
Misty's is one of Ash's best friends and water Pokemon trainer. She has attended a school that she hopes to learn on how to become a water Pokemon Master.
Brock:
Brock is one of Ash's best friends and a well known Pokémon Breeder. it is not revealed why he has become a teacher at the school.
Drew:
Drew is a Pokémon Coordinator and May's greatest rival. He attended the school in order to stay of May in contests. He has shown to have feelings for May and glares or lashes out at Ash, because of there close bond (and due to the fact that Ash and May are together).
Dawn:
Dawn is a young, blue-haired Pokémon Coordinator who traveled through the Sinnoh region along with Ash and Brock. Dawn started her journey at the age of 10, honing her skills as a Pokémon Trainer and focusing on becoming a Top Coordinator like her mother, Johanna. She attended school to further reach her goal and eventually becomes May's new rival.
Paul:
Paul is one of Ash's rivals, and a citizen of Veilstone City. He attended the school to further gain knowledge of becoming a powerful Pokemon trainer. After there last encounter, Paul is not as cold to Ash like he was, in the past and now sees Ash in respect because of his hard work as a Pokemon trainer. It is revealed that Paul has tiny feelings for Dawn that eventually grow, throughout the story.
Barry:
Barry is a 10-year-old Pokémon Trainer from Twinleaf Town. He attended school, to keep up with Paul and replace Ash as his rival. Barry has shown that he has an attraction to Serena but nothing serious.
Obscuro:
Obscuro is the inner strength of Ash Ketchum that has taken human form, after returning to Kalos. He still bears a grudge against Ash and plans to gain an existence of his own. He does show to have feelings for Serena but often tosses them aside (either because he sees how much Serena feels for Ash or because of his negativity towards himself).