Surprising Cartoon Crossover Survivor Veterans


 * 1) Scooby Doo for 10 years
 * 2) Ed for 11 years
 * 3) Margret for 12 years
 * 4) Captain Katz for 12 years after being in development for 6 years
 * 5) Princess Bubblegum for 11 years
 * 6) Lazlo for 11 years