|Full name||Aiden O'Sullivan|
|Residence||Twilight Haven, Canada|
|Partner(s)||Leo Kobayashi (boyfriend)|
|Affiliation(s)||Pheadmouth Justice Unit (formerly)|
|Appears in||Criminal Case|
|First appeared||Case 7: Don't Kiss and Kill (s1)|
Aiden is a 37-year-old medic and the boyfriend of weapons expert Leo Kobayashi, with curly brown hair, green eyes, and a cross earring on his left ear. He is seen wearing a black open collared shirt with breast pockets under a teal blue leather jacket and a silver-opal necklace around his neck.