Airplane design is not just limited to its steel, metal state, or rather, just the brand's logo splayed on the craft's outer walls. In fact, some airlines have their unique liveries like from the movie "Frozen," cartoon "The Adventures of Tintin," or "Pokemon." Here are the world's best airplane liveries that are feasts for the eyes.

Brussels Airlines. Brussels is proud to display one of its iconic characters, Tintin. Belgian cartoonist Herge created the character years back then, but who knew Brussels Airlines would have it for the Airbus A320? Aircraft artist Andrew Eisele was tasked to have the livery made for real, and he has done it! The design will be in place until 2019. According to CNN News, it took 1,500 hours to finish the work.

Kulula -- Flying 101, South Africa. The green plane wanted passengers and people to learn the various parts of an aircraft with its nifty and funny signs displayed on its exteriors. To illustrate, some captions with arrows include words like, "boot space," "the big cheese, captain my captain," or "loo, or mile high initiation chamber." Witty Kulula has sent the internet to insanity with its fantastic livery.

Canadian Airline WestJet. Because some people can't just "Let It Go," Canadian airline Westjet teamed up with Disney to send painters from the two countries and Germany to have their exterior painted from the animated movie, "Frozen." But this plane took it further when they even decided to design their interiors with a major "Frozen" theme. You can see all of its features here.

Virgin Atlantic -- Where's Waldo? Can you spot him? Easy. This Wally was placed along with the flying lady on the Boeing 747 aircraft. Virgin Atlantic celebrated Wally's birthday by putting him there for travelers to spot him. But unlike the children's books, Waldo's is in, this game makes Waldo quite easier to spot when not 35,000 ft above the ground.

Pokemon Jet. Because Japan is Japan, they can really make a Pokemon jet whenever and however they want to. Japanese airline All Nippon Airways promotes the popular anime in its liveries since 1998. That's right. It's almost two decades since Nippon Airways have its livery up in the sky. Pokemon from the original series up to the third generation has been displayed on the craft. But no matter what year they may be, Pikachu is always there. See The Daily Mail for yourself.