Notes:

Though he’s walking the path of righteousness, Aku’s personality hasn’t changed that much.

He’s definetly still an arrogant, childish, megalomaniac narcissist you really don’t want to see angry.
Which he is, unfortunatly, most of the time.

He is usually bipedal, though he can still shapeshift (see here: http://thememime.tumblr.com/post/161482176901/how-big-can-aku-get-in-the-au-considering-his );
the form he’s most frequently using is modelled to be practical in battle (armor, shorter beard and legs for kicking ass), and the cape he wears is to hide the magic seal on his back.

The spear is his main weapon! I designed if after the one he uses in “Aku’s fairytales”, Episode XIII… he STILL calls it “spear of truth” because he’s a freakin dork u

Also the last doodle on the bottom is the magic circle that gave him the mark on his back!
I never specified it, but it functions like an ever-lasting spell who powers the seal, so as long the circle is floating there, the magic keeps affecting him too.
If he were to go back to the past (where there wouldn’t be no circle yet) the mark would lose all its power over him.

Its an important plot point and yet I’ve never even talked about it… I feel so dumb ughh