Captain Thunder

is a Boss Yo-kai who first appeared in Yo-kai Watch Busters: Moon Rabbit Team.

Later on, Captain Thunder gains a befriendable Yo-kai Wib Wob in Yo-kai Watch: Wibble Wobble. Cap. Thunder's Wib Wob form is a Rank SS Yo-kai of the Shady tribe.

Biology
Captain Thunder looks similar to USApyon in Vader Mode, but instead has its rockets tied to the waist and is much taller and more muscular. He wields a larger version of USApyon's ray gun.

In his Serious Mode, the upper part of his suit is now torned away, revealing red markings, the rockets are instead tied to the ankles, and is missing the helmet. He now wields two massively large orange bazookas with metallic gray tips.

He quite underestimates the Busters when first meeting them, but when they at first defeat them he pulls his last resort: Serious Mode. According to Master Nyada, he's an alien.

(regular mode)
Shotgun No.3; Shoots a few quick red beams in front.

Captain punch; punches right in front of him.

Shocking' ball; shoots some slow moving, yet strong beam balls in front of him.

Thick thunder beam; shoots a powerful big beam in front of him, it can go across the stage.

Lighting sparking; shoots electricity around him.

(serious mode)
Shotgun No.9; Shoots a few quick red beams in front.

Combat break; punches right in front of him.

W Revolution; Shoots a very powerful beam in front of him.

Barrage Carnival ; S hoots some slow moving, yet strong beam balls in front of him. They move faster than shocking' ball.

Operation Ω; Floats in the air, and shoots a lock-on able beam, just keep moving from the target cursor to avoid it.

Yo-kai Watch (anime)
Captain Thunder appears in EP113 when Whisper was caught by Rubeus J and Mighty Dog for stealing a spiked microphone and starts to beat Whisper up, sending him flying out of the building when singing.

Quotes

 * When recruited (Yo-kai Watch: Wibble Wobble): "+Krroooohhh.....+ +Paaaahhh...+ Target locked on!"

Trivia

 * Captain Thunder was released in Yo-kai Watch: Wibble Wobble before USApyon, Yo-kai Watch Busters, and Yo-kai Watch 3 were even announced for the United States.
 * His befriending quote is based on Darth Vader's breathing via his helmet

Name Origin
"Capitaine Tonnerre" is the French translation of "Captain Thunder"