Durvasa maharshi

Durvasa was born to Sati Anasuya and Sage Atri by the blessings of Lord Shiva. He was well known for his short temper.
There is a story in Shrimad Bhagavatam about the confrontation between King Ambarish and Durvasa. Ambarish was a great devotee of Lord Vishnu. Once, Ambarisha was performing a Vratha and Sage Durvasa arrived at the end of the ceremony. Sage Durvasa was well received by King Ambarisha. Sage Durvasa went to bathe in the nearby river and asked the king to wait until he returned. However, king had to break his fast as the auspicious moments approached and there was no trace of Durvasa. So, on the advice of Sage Vasishta, king Ambarisha broke his fast. Durvasa came to know about it and took offense. He created a demon to kill king Ambarisha. King Ambarisha prayed Lord Vishnu. Lord Vishnu's Sudarhsana chakra came to the rescue of the king and killed the demon. It continued to chase the Sage Durvasa. Fearing for his life, Durvasa went to Lord Brahma and shiva for protection but was advised to take refuge with Lord Vishnu himself. Lord Vishnu suggested the sage to seek pardon with the knig. Durvasa pleaded the king for mercy and the king prayed to Lord Narayana to recall Sudharshana chakra (wheel) and thus saved the sage.

As per Mahabharata, he gave a boon to Kunti, wife of Pandu, with the help of which she could invoke any Devata of her choice and have his son.Once during Pandava's exile in forest, Sage Durvasa along with disciples visited them. Pandavas were having Akshaya patra which used to give them food daily. But on this occasion, even Draupadi finished her meals and kept the vessel washed clean. Pandavas were well aware of the sage’s short temper and were worried on how to arrange the food for the sage and his numerous disciples. Draupadi prayed to Lord Krishna for help. Lord Krishna asked Draupadi to search for any trace of food sticking to the Akshaya patra. Draupadi found a lone morsel of rice and Lord Krishna ate it. This had satisfied the hunger of the sage and his disciples and they blessed the Pandavas and left.