Hero Certified Burgers are not the best burgers in the GTA but they are pretty good and are ideal for this location.
There are still great (and cheaper) options at the Food Trucks located on the Queen Street stretch of Nathan Philips Square but none offer the range of toppings or vegetarian or piscatarian options that Hero offers.
If you are at Nathan Philips Square for skating and are maybe a bit concerned about bacteria, especially after you've taken off your skates, the packaging of a Hero burger lends itself nicely if you want to talk sanitation. You only need to hold the wrapper to eat your burger.