The Crimson Elite was a modified version of the standard Cylon Centurion in service to the Imperious Leader Erebus. A more evolved breed of Cylon, the Crimson Elites were smarter and more ruthless than their simplistic brethren, capable of simulating the worst of human emotions like hatred and anger.
Note
The "Battlestar Galactica" video game has its own continuity that uses elements from both the Original Series and the Re-imagined Series.
The concept for the Crimson Elite Cylons drew inspiration from the Cylon Command Centurion Vulpa seen in The Gun on Ice Planet Zero, Part I.