His sisters are 13; twin geniuses, both. He is younger, and thus always the guinea pig to their tests. Often willingly. The result? An awesome cartoon. The twin sisters Susan and Mary, and the boy, like the series, is named Johnny Test. Premiering back in 2005 on the Kids WB, Johnny Test will be entering his fifth season in a few weeks on Cartoon Network, June 13th. Sure, the math doesn’t necessarily add up, but when you’re getting good animation, it’s not really that important! A joint venture between Teletoon Productions and Cookie Jar Entertainment, Johnny Test will join Cartoon Network’s Monday night animated comedy lineup, which includes The Amazing World of Gumball, Adventure Time, MAD, and Regular Show. Great company; great toons. Johnny will fit right in!