One key element is his past as a samurai. It shapes his character and abilities. Another is his loyalty to Yoh. Also, his sword - fighting skills are very important in the story.
Amidamaru is a really cool character in Shaman King. His story is full of loyalty and honor. He was a samurai in his past life. His bond with Yoh Asakura is quite remarkable. He uses his skills as a spirit to help Yoh in battles against other shamans.
The phrase 'cartoon man mooning' means a cartoon guy is presenting his rear end. It's often used in a joking or offbeat way in cartoons, but it's not something you'd come across frequently in mainstream or serious cartoon content.
The political cartoon from the Center for Civic Education can have significant importance as it might visually communicate complex civic concepts in an easily understandable way to engage and educate the public.