The plural of "genie" is "genies" or "genii" ¹². The word "genie" is derived from the Arabic word "jinni" which refers to a supernatural creature in Islamic mythology ¹.
(1) Genie Definition & Meaning - Merriam-Webster. https://www.merriam-webster.com/dictionary/genie.
(2) What is the Plural of Genie? | GrammarBrain. https://grammarbrain.com/plural-of-genie/.
(3) What is the plural of genie? - WordHippo. https://www.wordhippo.com/what-is/the-plural-of/genie.html.