Chiyaan Vikram is working on the action thriller ‘Cobra’ and the versatile actor will be donning several looks for the film. Director Ajay Gnanamuthu has impressed fans with his previous films, and has already made a good opening with the first look of the film. The director has assured a few days back that there will be more updates coming up from ‘Cobra’ producers. And here is the first update from the makers! ‘Thumbi Thullal’, the first single from Vikram’s ‘Cobra’ has been announced to be released on Monday.