Mr Physco and Growler

Introduced in Series 6, Mr Physco and his pet dog Growler were the heaviest and most powerful robots ever seen in Robot Wars.

Mr Psycho

Mr Psycho
  • Weight: 750kg
  • Length: 163cm
  • Width: 145cm
  • Height: 150cm
  • Speed: 8mph

Mr Psycho made his dramatic debut at the Sixth Wars in heat A. It is the biggest and most powerful House Robot ever built.

Mr Psycho's giant claws are powered by two 9 tons hydraulic rams running at 3000 psi. They can in theory grab and lift the equivalent of two Sir Killalots! (280kg x 2)

His hammer head alone weighs in at 20kg and is given power by a hydraulic accumulator and a 9 ton shoulder and elbow ram generating awesome force.

The tracks are the same type used on Sir Killalot and are powered by two Briggs and Stratton 5hp electric motors run at 48 Volts, which are controlled by two speed controllers. The chassis is constructed from thick walled steel box section and the head is fibreglass.


  • Weight: 350kg
  • Length: 152cm
  • Width: 130cm
  • Height: 76cm
  • Speed: 20mph

Growler has something of a reputation for being the fastest ever House Robot and that speed is due to 2 48volt 5kw motors running a 4 wheel drive motive system. 300 amp speed controllers and 6 batteries ensure that Growler never runs out of power.

During the 6th wars he was so powerful he broke the arena and kept on breaking his drive system. The house roboteers kept having to make more! Growler is actually Mr Psycho's pet dog and became a member of the house robot gang at the same time as him.