David Aguilar, a 19-year-old from Spain has built himself an artificial arm using Lego pieces after being born without a right forearm due to a rare genetic condition. /VCG Photo

He reportedly had built himself the very first artificial arm with Lego pieces at the age of nine, though he only uses the artificial arm occasionally and is self-sufficient without it. /VCG Photo

Currently a bioengineering student in university, Aguilar aspires to create affordable prosthetic arms and find other affordable solutions for those in need. /VCG Photo

"As a child I was very nervous to be in front of other guys, because I was different, but that didn't stop me believing in my dreams," he told Reuters. /VCG Photo