Former SWAT tech specialist Marcus "Decibel" Drake designed the original sonic suppression devices after witnessing corrupt cops use radio static to cover evidence destruction during raids. When Internal Affairs buried his findings, he went rogue and perfected his siren technology during solo operations. Captain Ironclad eventually brought him into The Regulators fold after seeing his tech preserve critical evidence during a mayoral corruption bust.

Siren Slammer wears modified tactical armor with shoulder-mounted resonance emitters capable of projecting 140-decibel focused sound bursts. His primary weapon is a pump-action concussion grenade launcher modified to fire non-lethal sonic charges. The helmet features polarized visor and advanced hearing protection, while the chest rig contains frequency modulators that can shatter reinforced glass. His gloves have vibration-dampening tech to handle weapon recoil.

Serves as The Regulators' designated breaching coordinator, deploying sonic disruption technology to disorient targets during evidence-preservation raids. His tech creates crucial 8-second windows where corrupt officials cannot destroy digital evidence or coordinate defenses.