|Meredith Rodney McKay|
Dr. Meredith Rodney McKay, better known as Rodney McKay, due to his dislike of his real first name (he is called 'Meredith' or 'Mer' by his sister and briefly 'Rod' by Führer Nilem12), is a brilliant astrophysicist, and one of the leading experts on, not only the Stargate and wormhole physics, but also Vesper Technology and in nanite technology.
Although he is able to formulate many ground-breaking ideas on a broad range of subjects, his phobias and arrogance continually serve as a hindrance to people acknowledging his abilities.
McKay was initially involved with the Earth Stargate program and later became the leading scientist on the Atlantis. He is a self-important scientist with a great deal of knowledge but, according to Nilem12, has no feel for it.
When he joined Atlantis, he was very eager to be part of the expedition and he continues to excel in many scientific aspects. He is also a member of Task Force 141. Despite his mannerisms and insecurities, he does occasionally show endearing moments of vulnerability and bravery. Together with Nilem12, he works miracles with the tools at hand, but he has trouble acknowledging other people's work.