game character

hey :)

im making a 2.5D game which has the art style of concept art were its nice and detailed and i want the characters to be the same way but i dont now how i would do this, would i have to draw the characters from all sides to get the illusion of it walking around and stuff (what they do in all of the 2D games) or would it be best to make a 3D model then when texturing it do it in the art style i want