Complex sentence: Due to their nature, the Flügel tend to have violent thoughts, as well as harsh and sarcastic dispositions, and according to Jibril, the Flügel used to collect the severed heads of other races.
Split into simpler sentences: Due to their nature, the Flügel tend to have violent thoughts, as well as harsh and sarcastic dispositions. According to Jibril, the Flügel used to collect the severed heads of other races.