Thyma, a Burnish civilian, is first encountered trapped within a burning structure, rescued by external forces. The ordeal triggers an uncontrolled eruption of pyrokinetic power within her, plunging her into turmoil as she rejects this abrupt transformation. Her nascent abilities inadvertently injure bystanders, though she voices immediate remorse upon discovering her flames spare fellow Burnish.

Seized by Mad Burnish commanders Gueira and Meis, she is transported to a clandestine Burnish enclave. Despite their reassurances and offers of sanctuary, she resists embracing her altered existence. A sudden Freeze Force assault sees her recaptured, after which authorities imprison and experiment on her under harsh conditions.

Detained in a fortified facility, she briefly connects with Lio Fotia, Mad Burnish’s leader, during a chaotic escape attempt. Weak and bandaged, she confronts the systemic brutality inflicted on Burnishkind, her resolve underscoring persistent empathy. Relocated to a subterranean refuge, her body falters under captivity’s toll. A final effort to heal her using Burnish flame-based revival techniques proves futile—her form dissolves into ash.

Her demeanor remains marked by compassion, prioritizing others’ safety and lamenting unintended consequences. Interactions reveal fleeting ties to firefighter Galo Thymos, who saves her but later overlooks recognition, and a poignant alliance with Lio, who intervenes to aid her despite their unfamiliarity. Her journey epitomizes the crushing weight of institutionalized persecution and the human cost of societal dread toward the Burnish.