Abu Abdallah Muhammad V al-Hasan (Arabic: أبو عبد الله محمد الحسن), often called “Moulay Hasan” and sometimes “Muleasses” in 16th century writings, was the Hafsid caliph of Tunis from 1526 to 1543.

A delegation of notables then went to La Goulette to receive Rashid but Barbarossa landed 9,000 men, seized the Kasbah and proclaimed Suleiman the Magnificent as rightful ruler of Tunis.

He was obliged to sign a treaty, dated 5 August 1535, acknowledging that he held his crown as a vassal of Spain, and agreeing to pay for the cost of a Spanish garrison in La Goulette as well as regular tribute.

His life was described in works such as The General History of the Turks by Richard Knolles, which described him as “a man of insatiable Covetousness, unstaied Lust, horrible Cruelty, hated both of God and Man; who having by Treachery slain eighteen of his Brethren, or that which worse is, cruelly burnt out their Eyes, doth so reign alone, that he hath left him neither Kinsman nor Friend.”[12] Knolles also translated another work that mentioned him, The six bookes of a common-weale by Jean Bodin who asked: “And why in our time was Muleasses thrust out of his kingdome, and so lost his estate, but for intemperance?

and yet neverthelesse was so drowned in delights, as that returning out of Germanie, without hope that the emperour Charles the fift[h] (in whom his greatest trust was) would afford him any aid, and banished as he was out of his kingdom, yet spent he an hundred crowns upon the dressing of one peacock, as Paulus Ioui∣us reporteth... yet such was the judgement of God upon him, as that by the commaundement of his sonnes he had his eyes put out with an hot barre of Iron, by little and little drying up the humors of them, and deprived of his kingdome also.”[13] In 1607 or 1608 a play was produced in London, written by John Mason with the title An Excellent Tragedy of Mulleasses the Turke, and Borgias Governour of Florence.