Our reference to Camelot Warriors is found in the form of extra life item.

When you destroy a barrel it may leave a gift... or it may not.
Sometimes it is money but sometimes the gift is an extra life in the form of a can of coke.

This can of coke is the same that you should get on the third level of Camelot Warriors as the "elixir of life" (drink of life actually) or "elixir de la vida" in Spanish.