‘Hello Mr so-called Awesome Man!’ he said in a horrible, whiny drill voice. ‘Let us see how awesome you are ven you are all smeshed into liddle tiny bits.’ He had a German accent, I don’t know why.

‘Bring it on, Power-Tool Man. If you think you’re hard enough.’

‘Oh, ja, I sink I vill be hard enoff to deal vid you. My power-tools are all diamond-tipped, you know.’

Diamond-tipped! The only thing hard enough to cut another diamond!

He lunged at me with unexpected speed. I dodged and his whirring drill bit missed me by millimetres. As he went past I clouted him with all my force on the side of his head. He fell on to my bed and his circular saw ripped the mattress in two. Before he could regain his feet I leapt on him, grabbed him by the arms and flew out of the window with him.

As we zoomed up into the clear blue sky he smashed me repeatedly on the side of the head with his hammer-hand. The diamond-tipped hammer was making dents in me, I could feel it. That couldn’t be good.

‘You like dis, ja?’

‘Not much – but tell me how you like . . . this!’

We were about a hundred metres up in the air, and I let go of him. I expected him to fall and hit the ground with a sickening clang, but somehow I’d forgotten that he could fly, just like me, so instead of falling he just looped the loop, came up behind me and gave me a massive kick with one of his piledriver legs. I flew across the sky, out of control, arms waving helplessly.

‘Ja, I am liking dis, it is sehr gut!’

‘I wish you’d stop talking in that stupid accent!’

‘What stupid accent?’ he said, in a perfectly normal English accent.

‘I’m not here to give you elocution lessons, Power-Tool Man. I’m here to knock you into a pile of scrap metal!’

I steadied myself, thrust my fists out in front of me and power-dived at him at top speed. He didn’t try to get out of the way but flew straight towards me.

We met with a terrific clatter in the middle of the sky and bounced apart. But he recovered first. I was still spinning in the air when I felt his drill bite into my chest. At the same time the circular saw started to chew into my neck, and the hammer-hand was whacking me on the back of the head.

This was . . . too much. ‘I wish you couldn’t fly any more, Power-Tool Man,’ I shouted, and immediately he plunged away from me and spiralled towards the earth. He hit the ground with a crash that was loud even from a hundred metres up.