He is a Base Game Battleborn, which available:
- after completing "The Prologue" in Full Game version
- for 35,000 in Marketplace in Free Trial version
- during free character rotation in Free Trial version
Caldarius won his name, fame, and eternal Sustainment in the Jennerit Fighting Pits. Armed in the jet-enhanced J-HTX Assault Frame armor of the Jennerit Shock troops, Caldarius is brutally efficient at hit and run close quarters fighting.
- As told by Randy Varnell, creative director of Battleborn, Caldarius was one of few Kemessians which where taken into the slavery from the Empire forcibily.