The actor Peter Dinklage was in high school in New Jersey in the mid-1980s when he first watched “The Toxic Avenger,” Lloyd Kaufman and Michael Herz’s raunchy, low-budget horror comedy about a sad-sack custodian who tumbles into a vat of toxic waste and re-emerges a superhuman tutu-wearing mutant with mad brawling skills and a distaste for bullies.