I don´t have a written bio but I surely can tell you something about my Felix.

Felix Devereaux was born in a small village near the eerie swamps of Dartmoor.As a youth he was sent to an elite residential school near London.He always has acertain preference for risky adventures and when he was grown up this bad habit became evon stronger.After finishing school the young Felix decided to study law but just after some month his studies didn´t satisfy him anymore.
He applied for a job at the SIS where he now works as one of the leading specialists for Middle and Eastern Europe.But as he started to identify himself too much with the cover identities he created(for example the identity of an unscrupulous businessman or mercenary),Felix became more and more the dubious personality he is now.His superiors even thought about to dismiss Felix,but he´s still one of the most skilled persons of the SIS.
During one of his missions in Russia Felix met his russian colleague(and later lover) Antonin Charkorov.It´s a difficult and dangerous love between them because a love affair between a british and a soviet spy in Cold War Europe was never that easy.

Here a have some more drawings of Felix:
One from 2013:
Felix Devereaux
and this is the newest:
Mission