In Roget's 1853 edition of his thesaurus, each of the creatures in this set, the dragon, the kraken, the mermaid, and the unicorn, are listed under the word "Unconformity." We love that. It has the implication of not normal by way of intent, which is also how we feel much of the time.
Starbucks may not think these mythic creatures of the land and sea all rate their own Frappuccinos, but here at ThinkGeek they all rate their own tiki mugs. You can fill these mugs with no logo on the side up with whatever ridiculously-colored drink you'd like. These legendary beasts are known for being the center of epic tales of adventure. Imagine what stories you will tell after drinking with them!