April Eagle is the daughter of Commander Eagle and designed Project Ramrod as its engineer. She received training at Cavalry Command under General Whitehawk prior to becoming a Star Sheriff. Prior to joining the Star Sheriffs, she was a professional tennis player. In early episodes of the series, April had feelings for Saber Rider, which may have influenced her decision to give Nova, her robotic horse with abilities similar to Sabers Steed, in later WEP produced episodes.