R4 can refer to either a specific astromech droid model or one of several individual astromech droids.

Droid modelsEdit

• R4-series agromech droid
• R4-P-series astromech droid

Individual droidsEdit

• R4-A22
• R4-B11
• R4-D1
• R4-D2
• R4-D6
• R4-E1
• R4-F5
• R4-G9
• R4-H5
• R4-I9
• R4-J1
• R4-J9
• R4-K5
• R4-M17
• R4-M6
• R4-M9
• R4-M9 (Star Tours)
• R4-P17, nicknamed R4, or Arfour, was the astromech droid attached to Obi-Wan Kenobi's Delta-7 Aethersprite-class starfighter and was often on board his Delta-7B Aethersprite-class starfighter and Eta-2 Actis-class light interceptor prior to and during the Clone Wars.
• R4-P22 was the designation of the astromech droid attached to Anakin Skywalker's modified Delta-7 Aethersprite-class starfighter, Azure Angel, during the Clone Wars.
• R4-P44
• R4-S2
• Unidentified R4 unit (Star Tours)

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