The other option would be a Yojimbo event card or attachment.
Let's see
- I fight in her Name
- 1 Cost Attachment
- +1M/+1P
- Attaches to a friendly Yojimbo
- Interrupt: When one of your personalities is chosen to be the participant in a duel, this character is the participant instead.
Or
- Face me!
- 0 Cost Event
- Interrupt: When one of your personalities is chosen to be the participant in a duel, choose a target friendly personality instead. If this character is a Yoimbo, honour them.