Who is Kanakaberaka from Out of the Silent Planet and what is their importance?

Kanakaberaka is one of the froglike pfifltriggi who live on Malacandra. The pfifltriggi are masters at working in gold, silver and stone, and Kanakaberaka carries dozens of instruments strung about his body for this purpose. Ransom meets Kanakaberaka on the island of Meldilorn, where the pfifltriggi is engaged in carving Ransom's portrait on a stone monument to record his visit.