iron man
The "Avengers" star also posted a picture showing various Marvel characters celebrating Iron Man's birthday.
Ollie Gardiner died last November at the age of 13 after a battle with cancer.
Stan Lee created Marvel superheroes for a living, but for many of his fans, he too became a hero.
The Marvel mastermind co-created such iconic superheroes as Spiderman and Iron Man.
WHAT'S HAPPENING
A mysterious image has some Marvel fans theorizing that Paltrow's Pepper Potts will get her own Iron Man outfit.
The "Iron Man" actress flashes her hardcore humor.
The (infinite) wait is almost over.
Richard Browning, a pilot and inventor, admits it will be a while before anyone goes to Walmart in the suit.
He's an "awesome lecturer for considering our feelings," said one student.
No captain, my captain.