ABC of superheroes

[Doc Beechler (mod-MD)]

http://www.society6.com/studio/lishoffs/ABC_Superheroes That's awesome...

[Jason Marconnet (Pint sized mod)]

That is awesome. I identified most of them. I need help with J, M, U and Y. Is Z for zorro?

[Doc Beechler (mod-MD)]

http://www.bcdb.com/cartoon/59163-Mighty_Man_And_Yukk.html

Y is for Yukk the dog from the old Mighty Man and Yukk show

Z is Zorro.

J is Justice from Kurt Busiek's Avengers.

M is Mandrake the magician.

U is Ultraboy from the Legion.

[Jason Marconnet (Pint sized mod)]

I thought J might be for Justice but wasn't sure. Thanks for filling the rest of the blanks.