1 Signature Dr. Cortex - Signature 2 Guardian Dr. Cortex - Signature 3 The Thing Dr. Cortex - Signature 4 District Avenue Dr. Cortex - Signature 5 Doctor of Sound Dr. Cortex - Signature 6 Hostage Dr. Cortex - Signature 7 Recovery Dr. Cortex - Signature 8 Vocation Dr. Cortex - Signature