'Come with me if you want to live,' said the person standing on the gangplank of the enormous spaceship, who looked like a smaller, skinnier, less muscly version of Arnold Schwarzenegger.
'But...' said Nigel, 'you're a person!'
'What did you expect?' said the anti-Arnie. 'A green, bug-eyed monster, with webbed feet, great big flappy ears and antennae on his head?'
'Well...' said Nigel, 'yes.'
'Sorry to disappoint,' said the anti-Arnie. 'Now get in before they see you!'
'Before who sees us?' said McGinty.
'No time to explain,' said the anti-Arnie. 'Just hurry up, or you'll have a lot more than green, bug-eyed monsters to worry about.'
Nigel and McGinty couldn't think of anything better to do, so they followed the anti-Arnie onto the ship.