The year is After Colony 195, and mankind is in the midst of a seemingly endless ongoing war between the Space Colonies and the ones who created them: the people of Earth. To give the Colonies the advantage, five mobile suits called Gundams were created. Equipped with enhanced technology and extremely talented young pilots, these are the ultimate machines of war. While Relena Peacecraft pleads for peace, Heero Yui leads the Gundams into the battle with Earth to attain it. As their personalities and visions clash, their goal is the same: freedom for all and peace at last.
In a time filled with wars, environmental concerns and issues, there lives a gaggle of beautiful boys that are the personification of the world's countries. Japan, England, France, Finland, Germany and the rest of the boys attend the World Conference and tackle issues like global warming with a heavy dose of fun. Through multiple world wars the gang will traverse deserts, build mecha U-boats and solve the world's problems together!
Both series revolve around boys from different countries/nationalities and their interactions during wartime. While Hetalia is far more of a comedy, it shares Gundam Wing's attention to its (wide range of diverse) characters, their personalities, and their interactions.
What happens when authority and consequence are removed? When the inmates truly run the asylum. On the spaceship Ryvius there are those who would fight for order, and many more who would fight to destroy it. Love, hate, anger, greed, avarice, and perhaps hope are the fuel for the Ryvius, and only one can save those who call it home...
If you liked in one of the series any of the aspects mentioned here, you might like the other.
Both have children as main characters who get involved in a situation that by far surpasses what they are able to do.
While trying to survive (Infinite Ryvius) or trying to accomplish what they believe in (Gundam Wing), they are labelled terrorist and make enemies out of those who they belong to or those who they want to protect.
Both series share politics and human emotions/actions as themes, even though in different scales: Gundam Wing is more focused on the philosophy of politics and human ideals, while Infinte Ryvius is more focused on lack of rules and human behaviour in extreme situations.
Both shows feature military and political conflicts between two or three nations, with new powerful mechas being the biggest plot device. There's space, there's politics, and there's teenage angst. With qutie simialr cast of charachters, and very simialr battle coreography, these two mach quite well, so if you're a fan of one, there's a good chance you might like the other one.
After years apart, childhood friends Isamu Dyson and Guld Bowman reunite as rival pilots, each showcasing an experimental plane for the military. But their mutual love for longtime friend Myung threatens to spin their already tense feelings out of control! Now, each battles to secure Myung's affections, but even more dangerous than their own dark secrets is a clandestine plot involving superstar singer Sharon Apple that threatens all of humanity!
MKR is a Clamp anime about three girls who are taken from Tokyo during a school field trip, and transported into a fantasy world. Hikaru Shidou, Umi Ryuzaaki, and Fuu Hououji must fight a slew of enemies, overcome trials and tribulations, and face their inner demons to save Cephiro, a wonderfully detailed world, from a dastardly evil and powerful Priest, Zagato.