Ravonna Renslayer was the daughter of King Carelius, a ruler in the 40th century Earth. The kingdom of Carelius was the last bastion of civilization unconquered by Kang the Conqueror in that time period. Kang spared them because he was smitten with Ravonna and her fire. She refused his love because he was a commoner and not royalty, but he swore to win her heart eventually. Kang summoned the Avengers to his future in the hopes of winning Ravonna's affection by displaying his battle prowess. Instead, the Avengers joined forces with Ravonna when Kang grew tired of the games and ordered a full invasion of her kingdom