That sounds right but still, its an official nickelodeon game, they couldn't snip some voice lines from their respective shows and chuck em in there? Maybe they'll add them in a future update or something cause it sounds mad weird having all these characters be dead silent while beating the hell out of each other
Using lines also requires permission from the voice actors and will cost money. They don't have the budget for that. A shame tho cause this would be the perfect time for Nigel Thornberry to say "Smashing!" lol