Stella is an NCR Ranger who was captured by Caesar's Legion during the assault on Ranger station Charlie, who is now forced to fight in the Legion arena at the Fort. She is very skilled in unarmed combat and has killed many high ranking legionaries, including an elite centurion, with nothing more than her bare hands.
Stella appears only at the Fort once the Laurifer Gladiator quest is begun.
She has a number of special perks that increase her effectiveness in unarmed combat. In combat with the player, she can easily cripple limbs in one or two hits, making her a dangerous opponent.
Stella has all three ranks of the Iron Fist perk, despite it being a Fallout 3 perk and unavailable in Fallout: New Vegas.
Stella always appears in the arena, even if the player has not yet triggered the attack on Ranger station Charlie by either speaking with Ranger Andy in Novac or beginning Return to Sender.
Killing Stella does not lower the player's reputation with the NCR. However, some Legion soldiers at the Fort may be impressed and comment on her death.
Killing Stella with the machete counts for the Gun Runners' ArsenalchallengeArmed For Bear. A machete is always equipped for the arena, so you will gain a point towards this challenge, unless the machete is unequipped and you kill her with your bare fists.