Jack Griffo and Kira Kosarin are like peas and carrots. Actually, maybe they're more like peas and grapefruit, 'cause they do play polar opposites on The Thundermans. Kira's character is all about getting straight As, while Jack's character spends most of his time hanging in his evil lair. But even though they're different, they've got one major thing in common. They're both heroes! And we're not just talking about their time on set. They're pretty awesome in real life too.