化ける

transform, disguise oneself

化け transform, disguise oneself + Plain nonpast
verb · present Rare #42,109
transform, disguise oneself Often implies changing into something surprising or unrecognizable, especially by using makeup or a disguise.
JA: 彼女は化粧で別人に化けることができる。
EN: She can transform into a different person with makeup.

ハウルならもっと派手なものに化けるわね

If it were Howl, he’d transform into something much flashier.

— ハウルの動く城 (2004)

だがこの本が大金化けるはずだ

But this book could turn into a fortune.

— パディントン2 (2017)

年寄り犬に化けるなんて年寄りどんなに大変なのかわかってる

Do you have any idea how hard it is to be old, disguising yourself as an old dog like that?

— ハウルの動く城 (2004)

猫は化けると言われる

It is said that cats can shape-shift.