Rocket

A rocket (ロケット) is a vehicle used to obtain thrust from a rocket engine by pushing the rocket forwards simply by throwing their exhaust backwards extremely fast.

Mega Man Legends 2
When Mega Man Volnutt got stuck in Elysium at the end of Mega Man Legends 2, Roll Caskett and Tron Bonne teamed up to create a rocket to rescue him, but their initial attempts didn't work and kept exploding during flight. Teisel Bonne laments with Barrell Caskett and Verner Von Bluecher that the rocket shown in the ending was the tenth rocket they built. Not to be discouraged, Roll and Tron mutually refuse to give up on Mega Man, but shut Data's suggestions out over their heated disagreements on the schematics.

Project × Zone
At the beginning of Chapter 3 from the crossover Project × Zone, Servbot #1 mentions that the production of a rocket will be delayed further due to several events.

Mega Man Legends 3
In Mega Man Legends 3, the 28th rocket was under development in Klickelan Island, and Roll had a Rocket R&D Lab. The game's official site had a "Rocket Development Progress" section that represented the game's completion, with images of the rocket's development and three Servbots talking. It had six entries between November 16, 2010 and April 19, 2011 before the game's cancellation on July 18, 2011. In the 25% completion update, Servbot #33 says that the 27th rocket launched straight into the city. As both the English and Japanese rocket development pages were stored in Capcom's Japanese site, the English pages were removed when Capcom closed the Japanese Devroom.

Trivia

 * Fans from the series created a model of the rocket.