The supermarket issued the apology after mislabelling the outfit to coincide with the launch of the Marvel movie blockbuster.
The £15 product, which has now had its name corrected, was advertised as allowing children to “dress up as their favourite comic book character, Dark Panther, in this fun dress-up costume from Marvel’s Avengers”.
A number of customers took to Twitter to demand an explanation from the supermarket giant.
One person wrote: “Tesco please can you explain this to me? Why does this costume say ‘dark’ panther[?]
“There is no dark panther in the kingdom of Wakanda. It is Black Panter. #EpicFail”
Another wrote: “There’s a pretty big movie out at the moment called Black Panther, not sure if you’ve heard of it.
“The merch you sell is called ‘Dark Panther’. Is this a Tesco own brand superhero?”
Makala Thomas wrote on the store’s site: “Tesco, come on now. You taking the biscuit? The name is Black Panther!
“Now I love me some Tesco, I get my milk from you weekly but you’re taking the mick. Change the name.”
A Tesco spokesman told the Standard: “This was a mistake and we are extremely sorry for any offence caused.
“We are correcting the description of this product on our website and are reviewing our processes to ensure this doesn’t happen again.”