Your biggest challenge as an actor is to find acceptance from the audience and this becomes more when you are attempting to prove yourself in another language. There are very few heroes who have actually shined in various languages.
Tollywood has always been the chosen destination for Kollywood heroes and lately the list has increased. The latest in that happens to be Siva Karthikeyan who came with the movie Remo. He was seen as a woman with synthetic makeup but the film has become a disaster.
Point is, synthetic makeups or unusual looks don’t work, what matters is seriousness. For instance, look at Bollywood’s Mr Perfectionist Aamir Khan and see how he went from fat to fit for his new movie. That serious commitment and showing contrast gains attention. Moreover, the movie needs content or else it won’t work out.