Naptown Roller Girls first formed in 2006, with ad hoc practices in public spaces, and first held a competitive bout in 2007.

[7] In 2009, Naptown was the host league for the WFTDA North Central Regional Tournament "Monumental Mayhem', held at the Indiana Convention Center.

[7][8] In January 2017, the league announced it had changed its name to Naptown Roller Derby as part of an effort to be an "inclusive and supportive environment for skaters and staff.

"[9][10] The league is composed of three teams at different levels of competitive play: The Tornado Sirens (A-Team), The Warning Belles (B-team) and The Third Alarm (C-team).

[13] Naptown qualified for the WFTDA Division 2 Playoffs and Championship in 2017 as the twelfth seed in Pittsburgh, and finished in third place with a 215-144 victory over Dublin Roller Derby.