What’s the catch?

interrog. What is the drawback?; It sounds good. Are there any hidden problems? Sounds too good to be true. What’s the catch?

Name	Pronounced	Usage
Zinoviya	-	Russian
Theophilus	thee-AHF-ə-ləs (English)	Biblical, Ancient Greek (Latinized)
Si-Woo	shee-oo	Korean
Ercanbald	-	Ancient Germanic
Floriano	-	Italian
Imtiyaz	-	Arabic