Bubblegum Crisis Tokyo 2040 is a 1998 cyberpunk anime television series produced by AIC. It is a reboot of the 1987 OVA series Bubblegum Crisis, which focuses on the Knight Sabers, a rogue vigilante group made up of four women who use powered suits to fight rogue Boomer robots made by the megacorporation Genom.

Bubblegum Crash is a 1991 OVA anime series produced by Artmic and Artland. It is the sequel to the 1987 OVA series Bubblegum Crisis, taking place a year after the series. The Knight Sabers seem to be finished, as each of its members except Nene Romanova have seemingly drifted off to pursue their own goals. But at the same time, a recent string of robberies, murders, and Boomer malfunctions begin to occur. Knight Sabers' leader Sylia Stingray is then forced to recruit Nene and the other members back together. The group tries to find out who or what is behind the recent string of crimes which are somehow related to the creation of an advanced artificial intelligence.