SD Gundam
Although the SD Gundam franchise initially started out featuring characters and mecha from the mainstream Gundam series, by the 1990s SD Gundam spawned numerous spin-off series, "SD Gundam Sengokuden" (Musha Gundam) which has a Sengoku setting, "SD Gundam Gaiden" (Knight Gundam) which has a fantasy medieval setting and "SD Command Chronicles" which has a modern military style to name a few.