Siren

The Siren, sometimes called just Siren, is the champion fighter in the Crucible. It was mentioned that the Siren often hangs around the Slayer's Take guild. She also serves as a bouncer for the Velvet Cabaret. As an NPC, she is played by Matthew Mercer.

Appearance
The Siren is an extremely built/burly human woman with facial tattoos. When Vox Machina first saw her, she had short hair tied back into a very tight ponytail.

The Siren aggressively beat up a competitor in the Crucible, to the cheers of the crowd, then wiped the blood from her face and climbed out. When Grog later asked where he might find her, a barkeep told him that she was a slippery one who only showed up to the Crucible when she wanted a fight, and otherwise was known to sometimes run with the Slayer's Take, which Grog later confirmed with members of that guild who showed up to hunt the hydra.