Identify the character of Mahabharata with the help of following information:
• He was the son of Bheema.
• He belonged to Rakshasa clan from maternal side.
Ghatotkacha: Son of Bhima and Hidimba, a Rakshasi with reputed supernatural abilities.
Duryodhana: Eldest of the Kaurava princes; not a son of Bhima.
Abhimanyu: Son of Arjuna and Subhadra; not of Rakshasa lineage.
Bheeshma: Prominent Mahabharata figure known for his vows of celibacy and command of the Kaurava army; unaffiliated with the Rakshasa clan.