Jack Kirby and Stan Lee both say Black Panther was their idea and it was time to do a black superhero. Back in 1965 the character was prototyped as ‘Coal Tiger’ and wore yellow. 37 years later Kasper Cole became the White Tiger and ‘Cole and Tiger’ was born.
No surprise that HalloweenCostumes is talking about Black Panther. At the time of writing there’s 46 matches for ‘Black Panther’ on their site.