A Thandi
Thandi is the niece of the Gods, and if she wasn't on Earth, the Angels would’ve thrown a hissy fit. Every time her birthday rolls around, people who actually matter stop being sad and start being happy.
'Thandi's birthday is here!' 'Oh no, I'm gonna be happy again.'
At the party, Thandi walks in and everyone forgets their problems.
Thandi walks in, and the whole room goes from sad to sassy.