[spoiler]in the slots, theres a slug, a snake, and a frog, the three summoning animals of the sannin.
the guy behind the masked naruto is also wearing a mask(judging from this pic
Chaotsu is a character from DBZ, and he's shown as a mask behind naruto on the second rung from the top
the top pic shows a guy's back, and on his back is the symbol that represents the triforce in The legend of Zelda:ocarina of time. [/spoiler]
all I got for now, hope I got'em right.
Everything came from nothing, therefore everything is nothing.
There's nothing to worry about.