11 (Gatchaman), 13 (Gatchaman II and Fighter)
Jun (Adopted Sister)
Jinpei also known as Jinpei the Swallow is the Science Ninja Team's youngest member and the reconnaissance expert. He is the 'adopted' brother of Jun.
Jinpei never knew his parents or his earlier life, but claims to be the last descendant of the Iga ninja clan. He was found by Jun as an infant in the mountains, and taken back to the orphanage she lived in. Eventually they came under the wing of Dr. Nambu to undergo training for Kagaku Ninpo.
According to Fantastic Graphics TV Anime volume 3, Nambu did not intend on taking both children, but Jun insisted that he not split them up.
Jinpei is average height for a child his age, and has wild brown hair. His civilian clothing usually consists of an orange-and-yellow T-shirt with the number 4 on it and a pair of blue-and-white striped bellbottom pants. By the time of the sequels, he wears a slightly different crew neck-styled "4" shirt, as well as a cap and blue jeans, which are held up by matching blue suspenders.
His swallow-themed Bird Style is mainly yellow with red gloves and boots. It is adorned with a dark blue cape that is teal on the inside. His helmet is colored blue with yellow eyes and a red outline, with the visor being clear yellow, although the visor is colored a light teal in the two sequel series.
Jinpei's civilian clothing was updated and modernized for the remake, with him wearing a beanie and sweatshirt. His hair is also a bit curlier.
His Swallow Bird Style was modified to be primarily red, with yellow accents and a purple cape. Rather than the "G" belt, he now has just the symbol worn at the center of the uniform.
Cancelled Imagi Film Project
Jinpei underwent a few possible looks for the film, one being loosely based off his OVA appearance and having his entire uniform with a red-and-gold color scheme. Other designs took from the NTT ads for inspiration, although they later went back to using his classic uniform.
Jinpei is cheery and excitable like most children his age, as well as mischievous. But, he is also very responsible, helping Jun run her snack bar, and supporting his teammates to the best of his abilities when needed.
Jinpei knew Jun when growing up in the orphanage and is as close to her as a sibling by blood, helping her run the Snack J. Jinpei also likes to tease Jun about her feelings for Ken.
As Ken is his leader, Jinpei heeds Ken's every order and respects him. He is also close with Ken when not on the field calling him 'Aniki'.
Weapons and Arsenal
Jinpei's style of Kagaku Ninpo focuses mainly on stealth and incapacitating enemies as Jinpei's small body puts him at a disadvantage against enemies that are full grown.
Bolas: Jinpei's primary weapon in the original series. They are usually used to restrain enemies.Rebound Ball: Jinpei's primary weapon in Gatchaman II. A super-ball projectile that is thrown from a shovel-like mitt attached to his left hand.
Swallow Top: Jinpei's weapon in Gatchaman Fighter. A spinning top attached to a yo-yo like string.
Unnamed hacking device: In the Gatchaman OVA, Jinpei had a device which he could use to hack into Galactor computers. The device had a collapsible screen,a gamepad-like button interface and transmitted data to Jinpei's helmet via a heads up display on his visor.
Gatcha Four: Jinpei's mecha in Gatchaman Fighter. A large black and white land vehicle. One of the five vehicles that form the Gatchaspartan, it forms the central body of the ship.
Alterations in English Adaptations
"Battle of the Planets" significantly altered Jinpei, renaming him "Keyop" and describing him as being a genetically-engineered clone child who was born with an unusual speech impediment. Keyop often stutters and makes whirring noises, only being able to stammer out a few words at a time. While he still appears to be watched over by Princess, one episode implies that the two don't live together, as Princess tells him "I brought you breakfast from my place!".
Earlier plans for the adaptation had Keyop intended to be an alien child, with his odd stutter explained away as an alien accent.
"G-Force: Guardians of Space" has "Peewee", who is closer to Jinpei in characterization and attitude. An earlier pitch for "G-Force" had him renamed "David", although little is known about what his characterization would have been.
He was renamed "Mickey Dugan" in "Eagle Riders", marking the rare time that he received a surname in an adaptation.
Harmony Gold's dub of the OVA renamed him to be "Jimmy", although he was otherwise left intact aside from his Bird Style being referred to as "Falcon" instead of Swallow.
Yoku Shioya was Jinpei's actor in the original franchise, while the role was given to Rika Matsumoto for the OVA remake (as it featured newer actors and Shioya was now too old to convincingly voice a child character).
- Alan Young was the first actor to voice him in English, for the "Battle of the Planets" version.
- Barbara Goodson voiced him in "G-Force: Guardians of Space". A rejected pitch pilot of "G-Force" had him voiced by an actor named John Ferguson.
- Mona Marshall voiced him (as "Mickey") in "Eagle Riders", as well as voicing the role in Harmony Gold's initial dub of the OVA series.
- Luci Christian provides Jinpei's voice in the ADV Films dub of the series and the Sentai Filmworks redub of the OVA.
- While Jinpei's real birthday is unknown, it is celebrated on the day Jun had found him.
- Jinpei's name comes from the uncle of Gatchaman's screenwriter Jinzō Toriumi.
- Yoku Shioya was still a young adolescent during most of the anime and he entered puberty in the later stages, which is why Jinpei's voice is deeper in the final episode. By the time of the sequels, Shioya was twenty but continued to reprise his role.
- The OVA mentions Jinpei has a special driver's license to drive his dune buggy.
- Jinpei does not have a surname in the original series, and "Jinpei" was only a name given to him by Jun. However, the earliest planning materials for the series had him named "Jinpei Tsubakurou", his surname being patterned after the swallow. The live-action film continuity gives him the surname of "Ohtsuki".
- The early materials had Jinpei intended to be the fifth-in-command on the team, and gave him a "5" on his shirt in the model sheets.
- An alternative early design for Jinpei depicted his shirt as being two shades of orange and him wearing plain blue jeans, as well as sporting a yellow and blue baseball cap.
- Tatsuo Yoshida is said to have modeled Jinpei after Guts Ishimasu, a Japanese comedian and boxer.