How about Shrek, Spiderman or one of the Thunderbirds?
If you did, you might have featured in a Hartlepool Mail retro photo from years gone by.
Here is another chance to view fancy dress photos from our archives showing scenes from 2003 onwards.
So why not take a look and see if you can spot anyone you know.
1. Bouncing back to 2010
What a lovely photo from Boldon Colliery where they were doing a fancy dress walk for Help For Heroes in 2010. Remember this? Photo: SN
2. Saddle up for these 2012 memories
Fancy dress on horseback in aid of the British Horse Society Welfare. Were you there for this 2012 fundraiser at North Lizard Riding School? Photo: Stu Norton
3. All smiles in 2003
Who can tell us more about this 2003 fancy dress charity night - and who are the people pictured having a great time? Photo: IB
4. Bag packing for charity in 2010
The Prince's Trust team from South Tyneside College donned fancy dress for their sponsored back pack ten years ago. Were you among them? Photo: SN Shields Gazette