Twins

Twins is a movie starring Arnold SchWarzenegger, Danny DeVito, and Kelly Preston. A physically perfect but innocent man goes in search of his long-lost twin brother, who is short, a womanizer, and small-time crook.
Julius and Vincent Benedict are the results of an experiment that would allow for the perfect child. Julius was planned and grows to athletic proportions. Vincent is an accident and is somewhat smaller in stature. Vincent is placed in an orphanage while Julius is taken to a south seas island and raised by philosophers. Vincent becomes the ultimate low life and is about to be killed by loan sharks.