Ethan Shanfeld Sam Richardson may be best known for his comedic roles in “Veep,” “I Think You Should Leave with Tim Robinson” and “The Detroiters,” but this summer, the funny guy is taking on furry beasts in “Werewolves Within” and spike-shooting aliens in “The Tomorrow War.”Playing skittish draftee Charlie, Richardson adds levity to “The Tomorrow War,” which follows high school teacher Dan Forester (Chris Pratt) as he is recruited by a group of soldiers from the future to fight a war in 2051