Rapunki was an individual referenced in the Children of Tama language metaphorical phrase, "Rapunki, when he joined the Seven", which was a greeting indicating honor upon joining a new group.
Lt. Kayshon said this upon first arriving on the bridge of the USS Cerritos. Immediately afterwards, he apologized for the failure of the universal translator, and provided the translation himself: "It is my honor, captain." (LD: "Kayshon, His Eyes Open")
This character was only mentioned in dialogue.