That great car warrior (Ghatotkacha) was created by the illustrious Indra as a proper antagonist of Karna of matchless power in consequence of the weapon (he gave him).
स हि सृष्टो मघवता शक्तिहेतोर्महात्मना। कर्णस्याप्रतिवीर्यस्य प्रतियोद्धा महारथः॥