Superhero Birthday Party. Bright colors and fun ideas here: 3-tiered cake complete with a cityscape, superhero logos & the 3D cake topper made to resemble the birthday boy. Canvas tote favor bags printed with superhero sayings. Green rock candy Kryptonite. Comic strip word cut outs used for cupcake toppers. The birthday boy became the main character of his theme party. His friends received dress up superhero kits to wear.