The Vincross Hexa spider-crab can dance, record video, climb up stairs and perform all sorts of tricks. WSJ’s Joanna Stern took the robot for a stroll… on the beach.

Since 2007, [Jamie Mantzel] has been building a huge remote-controlled walking robot ... making the legs for his robot, and improving his welding rig. This week, though, has been very special.

What has six legs, gas, weighs more than a ton and ... who has workd with DARPA on a four-legged pack robot to help soldiers with heavy loads. Also on the team are Adam Bercu, two-time collegiate ...