Otakon Pool on Flickr, and kind of fell in love with it.  They don't say if it was a costume or not, but based on the arms, I presume it is someone on stilts.  Too bad he is about to die.  I mean everyone knows that Starscream donned the crown moments before Galvatron showed up and killed him.  Poor Starscream.

My name is Charlie, but if your looking for my work, I go by C. E. Dorsett.  I write scifi, fantasy, and a touch of horror.  I like to play with gothic, steampunk, decopunk, epic fantasy, and wuxia.  I love to tell stories and talk about books, movies, series, and music.