My mum came home after going to Vinnies (a charity) and gave us a box of Lego. Luckly it had half of the makuta titan set, unforunatly it didn't have the krrakaan. :( He built Otten from that makuta and a few other bionicle peices that he found in the mix as well. Otten is a Toa or hydrogen. He is a blacksmith who uses hydrogen explosions to bend and form the metal.
Otten running with his drill that he uses to puncture metal.