Hello Kitty has been such a hit that other firms are trying to replicate her success. Chinese companies are investing in new cartoons; Sanrio, too, frequently puts out more characters.

McDonald's latest Happy Meal —a Hello Kitty and Yu-Gi-Oh! crossover—is now available. Here's what to know, including how to buy the toys separately.

The Hello Kitty Café Truck will be at Wauwatosa's Mayfair mall, 2500 N. Mayfair Rd., from 10 a.m. to 7 p.m. June 28, the release said. It'll be located near Barnes & Noble.