While the 501st Legion seeks to promote the building and wearing of quality villain costumes from the Star Wars universe, our mission to do good in our communities knows no such bounds. To that end, we often ally and coordinate our efforts with our counterparts in our sister organizations listed below.
| Forum Name | Forum Address | Costume Club & Type |
|---|---|---|
| Astromech Forums | http://astromech.net/forums/index.php | R2-D2, Canon/Custom Astromechs |
| BB8 Builders Forum | http://www.bb8builders.club/forum | BB-8, Replica BB Units |
| Mandalorian Mercs | http://mandalorianmercs.org | Custom/Canon/Legends Mandalorians |
| Rebel Legion | http://www.rebellegion.com | Custom/Canon/Legends Jedi, Rebels, Heroes |
| Replica Prop Forum | http://www.therpf.com/ | Replica Prop Builders – Any Costume Type |
| The Dented Helmet | http://www.thedentedhelmet.com/ | Boba Fett, Jango Fett, Canon Bounty Hunters |