![Zama's 'Killer Katanas' compete in 'Scar Wars' mash-up roller derby bout with special guest | Article | The United States Army Zama's 'Killer Katanas' compete in 'Scar Wars' mash-up roller derby bout with special guest | Article | The United States Army](https://api.army.mil/e2/c/images/2013/02/26/283524/original.jpg)
Zama's 'Killer Katanas' compete in 'Scar Wars' mash-up roller derby bout with special guest | Article | The United States Army
![Worldskate - Skateboarding & Roller Sports - WRG17 Roller Derby: USA and Spain dominate during the first day of competition Worldskate - Skateboarding & Roller Sports - WRG17 Roller Derby: USA and Spain dominate during the first day of competition](http://www.worldskate.org/images/joomlart/article/1274/02-09-2017-Roller%20Derby%20AUS%20vs%20USA_09.jpg)
Worldskate - Skateboarding & Roller Sports - WRG17 Roller Derby: USA and Spain dominate during the first day of competition
![Kokeshi Roller Dolls: Okinawa, Japan! WHAT?!!!!! They have roller derby in Okinawa!!!! So excited | Roller derby, Roller, Bout Kokeshi Roller Dolls: Okinawa, Japan! WHAT?!!!!! They have roller derby in Okinawa!!!! So excited | Roller derby, Roller, Bout](https://i.pinimg.com/736x/f6/2f/cc/f62fccde0afecde479115d9181b3127f--okinawa-japan-roller-derby.jpg)
Kokeshi Roller Dolls: Okinawa, Japan! WHAT?!!!!! They have roller derby in Okinawa!!!! So excited | Roller derby, Roller, Bout
![Modern Roller Derby Skater of Japan's Rollergames League Akiyo Hoshino Photograph by Jim Fitzpatrick Modern Roller Derby Skater of Japan's Rollergames League Akiyo Hoshino Photograph by Jim Fitzpatrick](https://images.fineartamerica.com/images/artworkimages/mediumlarge/1/modern-roller-derby-skater-of-japans-roller-game-league-akiyo-hoshino-jim-fitzpatrick.jpg)