Alexander Birtles is a character artist working for Rebellion, a video game studio based on Oxford, United Kingdom. Rebellion is known for it’s Sniper Elite game series for PC, PS3 and XBox360.
Alexander Birtles have contribute to quite a few video game titles, such as Rogue Trooper, Aliens Vs Predator, Never Dead and Sniper Elite V2. Check out his character work for Aliens Vs Predator and Never Dead.
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Source – http://alexanderbirtles.com