He is the of Chitravahana by inheritance but in real he is the dearest son of Pandavas, therefore, you may protect him always.
चित्रवाहनदायादं धर्मात् पौरवनन्दनम्। पाण्डवानां प्रियं पुत्रं तस्मात् पालय सर्वदा॥