 Krishnamoorthy made a breakthrough as a comedy actor through his role in "Thavasi" (2001), where he notably appeared in a scene where his character asks Vadivelu's character for directions to meet terrorist Osama Bin Laden.He subsequently worked on several films in the 2000s as a comedian, often appearing in scenes alongside Vadivelu.He later won critical acclaim for his portrayal of Murugan, a middle manager in a human trafficking group in Bala's "Naan Kadavul" (2009) and as a corrupt police constable in "Mouna Guru" (2011).