Turtle Bazooka

Turtle Bazooka is a Destron Inhumanoid and an antagonist in Kamen Rider V3.

Kamen Rider V3
Turtle Bazooka was responsible for critically wounding Shiro Kazami and necessitating him being converted into Kamen Rider V3. He later participates in a trap the Kamen Riders 1 and 2 inside a Destron base before blowing it up, but they escape the trap with with assistance from Shiro.

Turtle Bazooka later had an A-Bomb installed into his body and was sent to Shinjuku as a suicide bomber. However, Kamen Riders 1 and 2 sacrifice themselves to take Turtle Bazooka out of the city and over the Pacific, where the bomb safely explodes and seemingly kills the Double Riders.

OOO, Den-O, All Riders: Let's Go Kamen Riders
Turtle Bazooka appears in 1971 before Destron emerged as a Shocker Kaijin, One of Shocker's strongest Inhumanoids.

Due to a change in history caused by Ankh leaving a O Medal behind in 1971, Shocker achieved its goal of world dominion with Shocker Greeed which defeated the Double Riders and consolidated the members of the various organizations that would have originally emerged in wake of its downfall into it. Turtle Bazooka was among the many monsters in the future who were folded into Shocker.

When the Den-Liner traveled to 1971 to restore history, Turtle Bazooka fired his cannons at it and severely damaged it.

Heisei Rider vs. Showa Rider: Kamen Rider Taisen feat. Super Sentai
Turtle Bazooka appeared as a revived member of the underground Badan Empire. After the 15 Heisei Riders and 15 Showa Riders joined forces to defeat Badan, Turtle Bazooka was destroyed along with two Destron Combatmen and two Chaps by Kamen Rider ZO with his ZO Kick.

Shuriken Sentai Ninninger Vs. Kamen Rider Drive Spring Vacation One-Hour Combining Special
Turtle Bazooka was sent to kill Shinnosuke Tomari, Go Shijima, and Takaharu Igasaki as they were searching for clues on Roidmude 089. He later confronted Go alongside Hiruchameleon, however Mach jammed the gun by clogging up the barrel with his shooting, causing Turtle Bazooka to explode when he tried to fire it.

Super Hero Taisen GP: Kamen Rider 3
Through an alteration to history rewritten by Shocker's History Modifying Machine, Shocker achieved its goal of world domination in the future after Kamen Rider 3 defeated the Double Riders in 1973. Turtle Bazooka is among the many monsters that serve Shocker in the alternate timeline, appearing in human form as a Shocker officer. He is later destroyed by Kamen Rider Black's Rider Kick.

Trivia

 * Despite working for Shocker in OOO, Den-O, All Riders: Let's Go Kamen Riders, its design is identical to the original V3 version, including the Destron emblem on his belt.