Omega - list of appearances

Season 10

 * The Three Doctors

Season 20

 * Arc of Infinity

Big Finish Doctor Who audio stories

 * Omega

Target Novelisations

 * Doctor Who — The Three Doctors
 * Doctor Who — Arc of Infinity
 * Doctor Who — Remembrance of the Daleks (cameo)

BBC Past Doctor Adventures

 * The Infinity Doctors

BBC Eighth Doctor Adventures

 * Interference - Book Two

Make Your Own Adventure with Doctor Who

 * Search for the Doctor

Brief Encounter

 * Anti-Matter with Fries

The Adventures of K9

 * K9 and the Time Trap (as Omegon)