My favorite is Bog king from Strange Magic - Has a song talking about how evil he is. But all he does is prevent the spread of dangerous mind control magic, and quarantine people under the effects of said magic. Yes he greatly annoys people doing so, but honestly? If I get hit by a love potion, please quarantine me.
Hate to break your heart over this, but it ain’t gonna happen. Give up on your dreams of arbitrarily changing orthography with an inconsistent look to the past, and realize that we have “th” in place, which was already taught to English speakers, and is present on every keyboard.
I got two languages on my phone, and I’m not about to install the goddamn Icelandic keyboard so I can triple-tap past Japanese and type some sort of bullshitty shortcut to “th” which were already present on my second keyboard, English.