His wingspan would be on the Y-axis, and seeing as how everything moves on the X-axis, it probably isnt an issue.
Also, not directed at you, here's his first appearance in 3d from Metroid Prime:
http://img3.wikia.nocookie.net/__cb2...tle_ground.jpg
http://i1.ytimg.com/vi/cQaorAbanC0/hqdefault.jpg
http://a141.idata.over-blog.com/0/00...ion24_0012.png
He's not THAT much bigger than Samus here.