The best place to introduce Kang the Conqueror's last multiversal variant in the MCU is the upcoming Armor Wars movie. Kang the Conqueror has been unleashed in the MCU, and his multiversal variants are ready to wreak havoc in the Multiverse Saga. After the events of Loki and Ant-Man and the Wasp: Quantumania, many of these Kang variants could start appearing in various MCU movies and shows. However, there is still no sign of one Kang variant that may be key to the franchise.

https://screenrant.com/armor-wars-iron-lad-kang-final-variant/