Oberto, Uberto, or Umberto II (English: Humbert) was the Count of Biandrate (Blan-Dras) in Lombardy and a participant in the Fourth Crusade.
However, the Emperor Henry marched on Thessalonica to force the Lombard lords to do him homage on Demetrius' behalf, but Oberto closed the gates to him.
He demanded the whole of Epirus from the Vardar river (in Macedonia) to the Adriatic and a corridor to the Black Sea going west of Philippopolis, which Henry accepted on condition that Margaret, Boniface' widow, would agree to it.
He imprisoned Oberto in the castle of Serres under the guard of Berthold II, Count of Katzenelnbogen, but later released him.
In 1224, according to Pope Honorius III, Oberto and William were headed east to relieve besieged Thessalonica, but it fell to the Despotate of Epirus before they arrived.