Ajaykumar,is popularly known as Guinness Pakru (Undapakru). He has made an entry into the Guinness Book of Records for being the shortest actor (64.008 cm height) to play a full length character in a film. He played the lead role in 'Albhuta Dweep', a Malayalam film directed by Vinayan. The movie was later dubbed in Tamil also.He hails from Kumaranalloor in Kottayam District. He is an economics graduate and having diploma in computer science who started his career as a mimicry artist and later moved on to films.

He debuted through the children's film 'Ambili Ammavan' in 1984. He now also acts in TV serials. He married Gayatri Mohan in March 2006.His accomplishments is cited in 167th page of Guinness book 2008 edition. Apart from this world record, he was also presented with the special Kerala State Award and Tamil Nadu state award for his performance in the film 'Dishyum' in 2006.In the film 'Albutha Dweep', starring him as dwarf prince Gajendra of the kingdom Vamanapuri on a fantasy island, where the men were cursed to be dwarves and women were of normal size. Around 300 dwarfs also acted in that film.