His nickname while with the Hornets was "Choo-Choo Charlie", in reference to the train that would often come by behind the stadium during games and practices.
In his 8-year tenure he established himself as one of the premier running backs in the Canadian Football League, earning the nickname "Blink" for his amazing quickness and agility.
The enigmatic back missed team flights, led the league in all-purpose yards, pondered retirement, led the league in rushing yards, publicly criticized some decisions, and signed a long-term big money deal to remain as the face of the Bombers.
On September 2, 2007 Roberts passed Leo Lewis to become the Winnipeg Blue Bombers all-time leading rusher.
On September 13, 2008, in a game against the Roughriders, Roberts ran to surpass 10,000 rushing yards in his CFL career.