LEGO 44003 SCAROX

44003 Scarox is a Hero Factory set released in January 2013. It is one of the smaller sets. He can combine 44002 Rocka.

If you flip a red switch, his upper arms will slam forward.
On LEGO.com, if you hover your mouse over his claws, he claims they are his canines, and if you hover your mouse over his canines, he claims they are his four claws.
In the Brain Attack preview, Scarox is shown to be a desert-dwelling bug called a Dune Crawler.