From the viewpoint of iconography, each Nikko and Gakko Bosatsu often has the sun disc and the moon disc, but there are old cases where they have no belongings, like the statue at the Kondo hall in Yakushi-ji Temple in Nara.
図像的には、日光・月光菩薩がそれぞれ日輪・月輪を持つ例が多いが、奈良・薬師寺金堂像のように、古い作例では持物のない場合もある。