YOU SAID:
When I'm done with Gru, he's gonna be begging for mercy!
INTO JAPANESE
Gruを使い終わったら、彼は慈悲を懇願します!
BACK INTO ENGLISH
When he finishes using Gru, he begs for mercy!
INTO JAPANESE
Gruの使用を終了すると、彼は慈悲を請います!
BACK INTO ENGLISH
When he finishes using Gru, he begs for mercy!
That didn't even make that much sense in English.