- Mark Ruffalo is set to star in a new HBO miniseries.
- Titled I Know This Much Is True, the series follows identical twins Thomas and Domenick.
- Ruffalo plays both twins, but he had to gain weight to play Thomas.
Mark Ruffalo has spent much of the last decade playing The Hulk in the MCU, but his newest role in I Know This Much Is True required a totally new set of skills. The HBO miniseries features Ruffalo as identical twins Thomas and Dominick, but the two brothers live different lives, and Thomas is schizophrenic and bigger than his brother.