Okay so something like:
Affiliation – Team: d6
Distinction – Hostages: d4
Power(s): Superhuman Reflexes d10 – so if he tries to attack/run for it Sleeper would be like ‘Not so fast!’ and flip Mysterio onto the ground/trip him as apropriate
Specialty – Covert: d8
Complication/Stress – d12 Physical Stress on Mysterio
Asset – None
That work?