With today marking Halloween, the footballing world has been getting involved in the festivities over the past few days.
They might be a little too old to be going around trick or treating in their neighbourhoods, but the likes of Cristiano Ronaldo, former Liverpool star Luis Garcia and current Anfield duo Firmino and Phillippe Coutinho have been showing off their costumes to fans.
Whilst the above might be having fun and games, down at Arsenal, meanwhile, the club's media department roped in new defender Shkodran Mustafi to try and scare his teammates on the spookiest night of the year.
The prank, seen in the video below, was a pretty simple one but it worked to perfection on some of the unwitting Gunners squad.
It all started off so innocently for the likes of Alex Iwobi, Santi Cazorla, Hector Bellerin, Carl Jenkinson and co. as they were rounded up in groups in front of a TV screen and asked to pick of Arsenal mascot Gunnersaurus in a 'Where's Wally' style cartoon.
Little did they know that it would be an evil looking Mustafi in a scary mask that they'd find by the end of it...
It is fair to say the reaction of the Arsenal stars is mixed.
From the bemused look on Francis Coquelin's face and the hilarity it caused Cazorla and Alexis Sanchez, to the fright it gave Chuba Akpom and Iwobi, it was a real mixed bag of results.
The best reaction, though, has to go to Jenkinson.
There's no doubt the full-back got a shock when Mustafi's face appeared on the big screen. However, after he'd gotten over the sight of his fellow defender, Jenkinson was actually more annoyed that the game he thought he was playing wasn't real.
Poor bloke put some real effort into finding the Arsenal mascot only to discover it had all been a big waste of time at his expense.