All credits go to the original creator of the LoRA
https://huggingface.co/akatz-ai/MiniMax-H3-Character-Swap-LoRA

Swaps characters in existing video.
If the character in the video and the replacement character look similar, it will not change anything.
Make sure to specify exactly what to replace, and who to replace with in the prompt.
Use google for downloading models in workflow.

P.S: Works on real videos too - surprisingly well.

Add more reference images to make the character more consistent in the output.