I purchased fondant at my local wally-world and the Wilton gel colors. I researched and researched and then researched a little more on pinterest and other sites for ideas and this is what I came up with.
I purposefully left the blue fondant uncut with rounded edges because I thought it looked like a cape. I choose several different emblems and colored fondant. In case you can't tell (from top left): Hulk, Iron Man, Black Widow, Captain America, and then Thor.
I found the Avengers emblem online and enlarged it on a word document. Once copied/printed, I put it on top of the fondant and using a knife, poked holes through the design onto the fondant. Then I simply connected the dots and cut out the image.
The "Zap" was created by rolling and cutting yellow fondant into the desired Super Hero sound shape. Then I rolled out black fondant and put the yellow shape on top of it. I simply cut the black slightly larger.
I made up my own Hulk emblem because I simply didn't like the ones I found online.
-An interesting side note- Superman and Batman are NOT part of the Avengers. They are Justice League. Just a little public service announcement because you wouldn't want to put the wrong emblem on the wrong cake.
Here are a couple closeups of the cake
And here is the cake with the birthday boy's name added.







