He’s forgetful. When Mr. Bailey dies no one suggests that Uncle Billy could run the Savings and Loan. He’s a beautiful, loyal heart, but a manager he is not.
Uncle Billy loses the deposit — forgets it — because he wants a piece of Mr. Potter. He just has to tell him off, which causes him to leave the money behind, momentarily forgotten. Is this a trait that helps identify his Enneagram? Anyone would want a righteous poke at Potter. Not everyone would let their emotion out until the deposit was secured, though.
And when George yells at him . . . oh, doesn’t it break your heart? It’s because Uncle Billy, in a small way, deserves it. He’s a grown man who can’t be trusted with a grown-up’s responsibility. However, it’s possible that Billy is mentally challenged. No one spells it out, but that’s how he’s played. Without George, in the angel’s version, Billy is committed to a mental institution. No one’s asked him to step up, no one’s depended on his support. On his own he can’t cope.
I’m tempted to say that Uncle Billy has no Enneagram. He has the strings on his fingers, and all else could be attributed to challenge rather than personality. Is he a Head Type? A Body Type? Probably not. As a Heart Type is he a befuddled Two? His sweet enthusiasm, and his love for George, are priceless.
Actually, that’s the clue that he’s a Two, albeit a challenged Two. Sevens, which is George, tend to collect Twos as precious sidekicks. (Notice that Clarence is also a Two.) Without George, Billy has no purpose or direction.