battle howl

[Theodore01]

Battle Howl
Once per turn, you may let out a battle cry during a charge action. The target of the charge makes a Will save of DC 10 + your CHA modifier + 1 for every five ranks in the Intimidate skill. If they fail, they get -2 to hit for 1d4 rounds.

A CHA-check really ? There comes that charming guy - i shudder in fear.

Wouldn't a STR or CON check be more appropriate ?

And what about the taunt skill, that could fit in here too.
Like affecting more than one nearby target.

[Planehopper]

Yeah a CHA check, like most other similar skills. Charisma is force of personality, not simply charm or good looks.