The word(s) "kings" appears 2 time(s) in 2 verse(s) in Quran in Muhammad Pickthal translation.

(1) And (remember) when Moses said unto his people: O my people! Remember Allah's favour unto you, how He placed among you prophets, and He made you kings, and gave you that (which) He gave not to any (other) of (His) creatures.

(سورة المائدة, Al-Maaida, Chapter #5, Verse #20)
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(2) She said: Lo! kings, when they enter a township, ruin it and make the honour of its people shame. Thus will they do.

(سورة النمل, An-Naml, Chapter #27, Verse #34)
(Arabic, Transliteration, Urdu (Ahmed Ali), Urdu (Jalandhry), Farsi, Yusuf Ali, Shakir, Picthal, Mohsin Khan, French, Spanish, Indonesian, Malay, German, Bosnian, Russian, Dutch, Italian, Portuguese, Tafsir - Jalal ad-Din, Tafsir - King Fahad Quran Complex)