You guys just take random guesses. Try and work it out. Think about it. Ansem is mentioned far more than once and it at the very end.
Port to port-I'm guessing that it is with sora and co. as they are the only ones to travel to different places
I flaunt my charm-Charming character...duh.
When united with others-United with others could mean it doesn't see people often which may mean it's a summon.
I spare you of harm-It either fights or heals
Yet use me not-Useless or costing character or item
For I'm a frivolous friend-It's shallow which means that it can't be an object as it has emotions
I'm mentioned but once-Only mentioned once, not a very important character
And quite far from the end-mentioned at the beginning of the game
What am I-I have no ideaI'm guessing a summon...but the only one that i would think fits is Tinkerbell. Maybe Mushu?
Stay Essential
EE