His type are nice at heart, but Shenron, being a powerful dragon, has an aggressive temper and may be irritable at times (for some reason, more so than Porunga, the Namekian Dragon). He also tends to be overconfident in his abilities. Shenron's personality in the series is shown through his voice actor, Takehiro Muroi. He plays up the role nicely by adding an edge to his voice whenever Shenron gets angry or threatens someone. In the original Japanese version, his name is said in katakana onscreen during scenes where he is present. This is because his name is used frequently, and writing it out would cause an overflow on the screen. In English versions, his name is always written out in full words instead. This is because his name is not used that often- mostly just when he is introduced - and writing it out would not make for good viewing. He first appears in the episode "Dragon Ball". Shenron has been sent down from heaven as a guardian deity for Earth, along with two other dragons named Porunga and Nergal. However, due to their arrogance, they were banished from heaven by God himself. Only Shenron was able to learn humility through pain, thus keeping his position as a god.