In the last decade, Cartoon Network began importing a number of series, usually flash animated, from Canada. Some were successful, while others couldn't be sustained.
Total Drama was designed as a parody of reality TV, particularly, Survivor, which had been on the air for 6 years by the time the first installment, Total Drama Island, hit the air in 2007. "Host" Chris McLean is the only recurring character in each of the 5 incarnations of the franchise, as he's meant to be an analogue for Survivor host Jeff Probst.
Here's a sample of Total Drama Island:
The series had to be heavily edited upon crossing the border from Canada to the US. Not only that, but each series had to have two endings, in order, perhaps, not to offend certain sections of the world. Don't ask. I can only guess.