Vulcanus, sometimes said to be the higher octave of Saturn, provides strength to improve collective relations, to structure things, to be efficient, and to get straight to the point. On the downside, he may bring about arrogance and scattered efforts. Hypothetical trans-Neptunian planets - Cupido, Hades, Zeus, Kronos, Apollon, Admetos, Vulcanus, Poseidon, and Proseprina - the existence of which is not proven, were invented by Alfred Witte, founder of the famous Hamburg School, and by his student, Friedrich Sieggrün.