Joshua "BurntSanctuary" Keller (born July 17, 1996), is an English speaking freelance caster and analyst from Germany.
BurntSanctuary started casting online for a tournament organizer in October, 2015. He attended his first LAN event as a caster at the end of the same year. Since then, he has attended multiple LAN events as a caster and analyst, including the WESG World Finals 2017 and the Copenhagen Games 2018. Starting from January 11th, 2018, he would be the Junior Host for Unikrn,  until they closed their studio in Berlin on June 8th, 2018, when Keller announced that he would be focusing on freelance work again. 
Notable Events Casted or Hosted
|2019-04-20||Minor||Copenhagen Games 2019 - Female||Commentator|
|2018-10-07||Minor||Hellcase Cup #7||Commentator|
|2018-03-31||Minor||Copenhagen Games 2018 - Female||Grand Final Commentator|
|2018-03-31||Major||Copenhagen Games 2018||Commentator|
|2018-03-31||Major||Copenhagen Games 2018||Analyst|
|2018-03-17||Major||World Electronic Sports Games 2017: Female||Commentator|
|2017-11-26||Minor||WESG 2017 European Finals: Female||Commentator|
|2017-09-10||Minor||Cross Border Esport 2017||Commentator||None|
|2017-09-03||Minor||GIRLGAMER Esports Festival 2017||Commentator|
|2017-04-15||Minor||Copenhagen Games 2017 Female||Commentator|
|About achievementsBroadcasts from any Tournament|
- His nickname originates from the theme song of the video game Kingdom Hearts 2, called "Sanctuary".
- Was active as a manager and coach before.
- Functioned as the head administrator for multiple online qualifiers for LAN events, including creating the whole schedule and ruleset.
- Has experience as an interviewer and host.
- Writer for Fragbite.
- He is one of the Founders of FemaleCSLive.
- "Welcome Joshua Keller". Unikrn. 2018-01-11.
- "Bye Bye Unikrn - Let's see what the future brings!". BurntSanctuary. 2018-06-08.