hi there ,
well i guess the first and foremost thng would be how well is the candidate able to communicate , is the individual confident , is the individual charismatic, a quick thinker and yes does the individual have an inclination towards growth and learning , is he /she humorous , and a team player and yes above all does the individual have good knowledge on the subject HR& a positive attitude ....
hope i hve helped you !
regards,
mehvish