Companion of the 4th and 5th Doctors, the Wesley Crusher of the TARDIS.

Didn't attend Starfleet Academy because he lived in E-Space, but did win a gold edged badge for mathematical excellence. Because he couldn't drop out of the academy to become a super-being he destroyed his badge to murder a cyberman.

Unable to resist the lure of solving a logic problem, he lept out of an escape pod, back on to a ship that was about to crash land on Earth and died.

That episode the BBC deleted the music from the end credits.