The NATO phonetics are so tired and old. This one uses popular fictional characters instead:
Aladdin Buffy Cruella Dorothy Edward Fiona Gandalf Hulk Igor Joker Kermit Lilo Mufasa Naruto Olaf Pikachu Quark Rapunzel Scoobie Tigger Ursula Vegeta Wolverine Xena Yoda Zorro
I suspect that’s why NATO uses Charlie. No other letter is pronounced ⟨tʃ⟩ with any significant frequency in English.
Can I suggest Chucky?
Edit: actually, even better: Chewbacca.