Playful, funny cartoon style with thick black outlines and bright saturated colors: a red-brick wall with a huge jagged smash-through hole revealing a sunny, stylized city skyline. Iron Man, Spider-Man, Captain America, and Hulk burst through in energetic, whimsical poses—Iron Man hovering forward with glowing repulsors, Spider-Man swinging upside-down on a web with a cheeky wink and trailing streamers, Captain America lunging shield-first with a big grin, Hulk smashing through with a tiny crooked party hat and flying bricks. Confetti pops and comic speed lines amp up the action. Centered across the break, big bold 3D block lettering reads: “HAPPY BIRTHDAY — Assemble for cake!” in bright yellow with an electric-blue outline and chunky drop shadow, highly legible. Full-bleed portrait composition, vector-like finish, punchy lighting, no additional text.

Generated with these themes: Marvel, Iron Man, Spider-Man, Captain America, and Hulk, , and .

Made with ❤️ by AI.