The first ruler of Khilji dynasty was Jalaluddin Khalji. He came to power in 1290, after ending the life of Mamluk dynasty's last ruler Muiz ud din Qaiqabad.
Jalaluddin Khalji was of Turko-Afghan origin, and ruled for 6 years before he was murdered in 1296 by his nephew Juna Khan, who was also his son-in-law. Juna Khan later came to be known as Alauddin Khalji.
Alauddin Khalji continued expanding Delhi Sultanate into South India. After Alauddin's death in 1316, his army general Malik Kafur who was born in a Hindu family in India and had converted to Islam, tried to assume power. He lacked the support of Persian and Afghan nobility. Malik Kafur was killed.
The last Khilji ruler was Alauddin's 18-year old son Qutb-ud-din Mubarak Shah Khilji, who ruled for 4 years before he was killed by Khusraw Khan. Khusraw Khan's reign lasted few months, when Ghazi Malik later to be called Ghiyasuddin Tughluq killed him and assumed power in 1320 AD, thus beginning the Tughluq dynasty of Delhi Sultanate.