Q is a recurring character in the James Bond series. He is the head of Q Branch, the fictional research and development division of the British Secret Service.
Aside from even more background information, Q will give you the lowdown on any handy gadgets that you may require for this mission. -Instruction manual
Q often provides information on the various gadgets that will be used in each mission. He is often annoyed by Bond's reckless use of equipment provided by Mi6, and tends to make snarky comments towards the agent.