The Land Walker Robot Machine from Japan has two rapid fire machine guns on each side. Imagine this robot after a few more advancements in technology.
This Japanese manufactured biped robot is 11 foot tall , weighs 1 ton and sells for 36 million yen.
Life-size Wabian 2 or Giant sized Land Walker Japan robot suit. Japanese language video:
Toyota showed off its violin playing humanoid robot Robina among other robotics Video:
A violin playing robot – a two wheeled human transporter – human assistance robot