Bandai picked the Derby-based indie as the winner of its competition.
All orders received for the new Ben 10 Omniverse range throughout the show were entered into the prize draw to win a character visit, organised in partnership with Cartoon Network.
Toymaster’s Paul Reader was invited to pick the winner during the final afternoon in Harrogate.
Bandai sales manager, Amy Allbon, commented: "We have had a fantastic response to the new Ben 10 offering at the show and there has been a lot of interest in our stunning new Omniverse FSDU.
"We have enjoyed running this superb competition to give away a character visit and we are grateful to Cartoon Network for supporting us. Congratulations to Midco Toys.”
Dave Middleton, owner of Midco Toys, added: "This is really fantastic news and we would like to thank Bandai and Cartoon Network for arranging this for us.
"Ben 10 is one of our best performing brands so we can’t wait to welcome an Omniverse costume character to Derby to coincide with the launch of the new toys. This is just magic."
Want to receive up to the minute toy industry news straight to your inbox? Click here to sign up for the free ToyNews Daily Digest and Newsflash services. You can also follow ToyNews on Twitter and Facebook.