Characters » Heracles
He often adds "n" to the end of sentence (in Japanese). For example, He call Usopp (Usoppu ウソップ) to Usoppun (Usoppun ウソップン), or himself is Heraclesun (Herakuresun, ヘラクレスン). He also has a habit of repeatedly introducing himself.
His name, Heracles, comes from the Greek Hero Heracles, known as Hercules in Rome, or rather from the Hercules Beetle. Edit