Orbot

Orbot is a robot built by Dr. Eggman to wait on him hand and foot and serves as one of his assistants. Orbot's main jobs are assisting Dr. Eggman in his schemes for world domination and making sure the processes of his plans are carried out correctly along with his counterpart Cubot. While Orbot is loyal to Eggman, he does not like him very much and usually points out his mistakes, much to Eggman's frustration.

Mario & Sonic at the London 2012 Olympic Games
In the Wii version of Mario & Sonic at the London 2012 Olympic Games, where he appears as a referee in several Events. Orbot also appears with Cubot in London Party mode, where they can appear as a ? mark effect and copy one of the player's existing stickers onto a blank space, as well as appearing to provide dialogue for Metal Sonic when he is spoken to during the mode. Orbot and Cubot are also both featured in the Orbot & Cubot Tag! minigame, in which the work against the team of players to try and capture them all.

In the Nintendo 3DS version, Orbot appears as a referee for Long Jump and Triple Jump, where he will measure the distance achieved if the player performs a successful jump. In the Story Mode, Orbot only appears in the Tricksters bonus episodes, where after accusing Dr. Eggman of programming Metal Sonic so that he can defeat him and refusing to be challenged himself, he unsuccessfully tries to help set up a match between Waluigi and Metal Sonic. He then later tries to use the same technique Dr. Eggman used to convince Waluigi to set up a match with Wario, but when this fails he is offered by Dr. Eggman to Wario as a prize if he wins. Orbot later watches Dr. Eggman successfully produce Phantasmal Fog with the Fog urn, and after being confused by the sudden disappearance and reappearance of the Sonic Fog Imposter, Dr. Eggman explains the history of the urn. When he later suggests that Dr. Eggman hasn't been training for the Olympic Games, Dr. Eggman chases him and threatens to replace his voice chip. A badge of Orbot can be obtained from the badge machine.

Mario & Sonic at the Sochi 2014 Olympic Winter Games
In Mario & Sonic at the Sochi 2014 Olympic Winter Games, Orbot appears alongside Cubot as one of the hosts for the Action and Answer Tour.

Mario & Sonic at the Rio 2016 Olympic Games
Orbot is the single player events host in Mario & Sonic at the Rio 2016 Olympic Games.

Mario & Sonic at the Olympic Games Tokyo 2020
Orbot reappears in Mario & Sonic at the Olympic Games Tokyo 2020 as a non-playable character.