Benga is encountered a couple times throughout the player's journey through the Black TowerB2/White TreehollowW2, until he's finally battled as the Boss Trainer of Area 10, the final area of the facility. After being defeated, he tells the player to come meet him at Alder's house in Floccesy Town. If the player then returns to the house with an empty slot in their party, Benga will give them a ShinyGibleB2/DratiniW2 as a gift, before returning to the Black TowerB2/White TreehollowW2.
"No! I know that Trainer's strong! And I want to battle! But those Pokémon haven't been through enough! Me! And my Pokémon! We climbed to the topB2/made it to the deepest partW2 of the Black TowerB2/White TreehollowW2! You do that too! There we'll see who's stronger! Let's try hard to be the best! Later! Gramps and <player>!"
"This area is no problem, right? For you guys. I mean, you have your Pokémon with you. Right! Keep on going with your Pokémon! I'll be waiting for you higher upB2/down belowW2!"
Area 6 elevator room
"Oh, hey! You made it this far, huh? You and your Pokémon sure make a great team! I tell you, it's the teamwork between humans and Pokémon that brought the world to where it is today. Throughout history we've complemented each other to overcome all obstacles! It might be that this place exists so we can experience that history firsthand! See you around!"
"Back in Grampa Alder's house. We promised, remember? We're gonna compete with each other. And see who's stronger!"
After being defeated
"So exciting! You and your Pokémon's combination! Amazing teamwork! Places where humans can't go alone. Places where Pokémon don't think to go. You can go anywhere with teamwork. Between Trainers and Pokémon! Like you and me! I'm glad you understand that now! Hey! Hey!! Hey!!! You'd better come to Grampa's house! You know where it is: in Floccesy Town! I'll give you something awesome! It's a promise, OK?"
"You and us! Our Pokémon! The strength we have! We'll give it our all! No holding back!
After being defeated
"So exciting! My grampa was the Champion! But Trainers like you are even stronger! We just need to keep competing! Then we can keep aiming higher! As Pokémon Trainers! And as people! And it's all thanks to our Pokémon! Come again! I want to keep aiming higher!
Floccesy Town (after defeating Benga)
"Hey! Hey! Hey! It was a promise! Between me and you! We had the best match! This is to remember it by! Raise this GibleB2/DratiniW2!
After his suspension period had ended, Benga returned to school, only to find that his class had gone off to Castelia City on a trip. Following their tracks, Benga traveled to Castelia with Marlon, only to witness the city getting frozen by the Plasma Frigate. Benga and Marlon found the class, unconscious but unharmed, and took them to the Marine Tube to recuperate. Once the class had woken up, Benga and Marlon explained everything to them, and revealed that they are gathering forces to help launch a counterattack against Team Plasma.
Gible → Gabite ♂
Gabite is Benga's first known Pokémon. He was first seen assisting Benga by carrying firewood to help Benga's classmates recuperate from the cold caused by Castelia City being frozen. On Benga's first day of school, Gabite, then a Gible, was used to battle Blake, Hugh, and Leo, but was defeated.
Volcarona is Benga's second known Pokémon. It was first seen assisting Benga by setting some firewood alight to help Benga's classmates recuperate from the cold caused by Castelia City being frozen. Due to the Marine Tube being an enclosed space, Marlon put out the flames with his Jellicent. On Benga's first day of school, Volcarona, then a Larvesta, was used to battle Blake, Hugh, and Leo, but was defeated.