Japanese engineer builds giant robot to fulfill anime dream Video

Now Playing: Vero social network app is taking on Facebook

Now Playing: Japanese engineer builds giant robot to fulfill anime dream

Now Playing: TESS, a NASA Explorer mission, to scan universe

Now Playing: NTSB says Tesla is not cooperating in self-driving crash

Now Playing: Gmail redesign in the works

Now Playing: Uber expanding transportation offerings

Now Playing: Possible Sprint, T-Mobile mega merger

Now Playing: Steve Wozniak speaks out about quitting Facebook: ‘I’m just tired of all the ads’

Now Playing: All Apple stores around the world now running on clean energy

Now Playing: Zuckerberg suits up for meetings with lawmakers

Now Playing: Elon Musk faced with a fast-paced challenge

Now Playing: Facebook COO admits company made mistakes

Now Playing: Apple pushes back release date for Mac Pro desktop to 2019

Now Playing: Delta Airlines discovers data breach

Now Playing: NASA unveils plan for quieter supersonic aircraft

Now Playing: Facebook removes Russian accounts

Now Playing: Panera Bread data breach affects millions of customer records

Now Playing: Facebook to make sure advertisers get users’ permission

Now Playing: Cost of smartphones reaching an all-time high

Now Playing: Under Armour data breach could affect 150 million