Personality wise, we have a few that counter/go with one another so to speak.

Protective (No energy loss when sending lions to Nature reserve) counters Heartless (No energy loss when killing lions).

Mysterious grants additional damage during Nighttime battles, whereas Chivalrous grants additional damage during Daytime battles.

In May, we have Stoic, which grants you -7 energy from a successful battle rather than -10. My suggestion is to add in a counter/partner/whatever you wanna call it personality called Cowardly. The effect of this personality? -2 energy (a 3 energy span just like Stoic's) per unsuccessful/fled battle, rather than -5.

Thoughts?

Sorry to counter this a bit, but I'd have to recommend -3 energy instead of -2, as battles are supposed to take quite a bit of energy.
Also, where would you get Cowardly? Would it be a choice on the mask between Stoic or Cowardly, or be by chance, or a whole different mask entirely?
Great idea, though - much support here : ) Holly (120314)