(If you want to go directly to summoning an entity to aid you - skip this section and go directly to section 13 onwards).
Muyalakan is also know by Hindu Aaiyyanists as Apasmara. In Hindu Aaiyyanist tradition he is represented as an immortal short/dwarven flesh eating dark demon that suppresses knowledge and makes humans ignorant. Tantric Aaiyyanists usually summon Muyalakan to dispel the negative cloud of ignorance and allow sparks of hidden knowledge to flow forth. It has been said that many Aaiyyanists in the past conversed with Muyalakan to gain knowledge, especially in the areas of formulating the sacred scripts to open up Lokas and Talas. In this regard, invoking Apasmara is not limited to Tantric Aaiyyanists but other schools of thought as well.
In Hindu Aaiyyanist Lore, Apasmara was created by Brahma to keep the hidden knowledge away from the entities of this Universe, should they try to perform the Ud-Porilian ritual and link with Brahman. There was also fear amongst the Gods that entities (not just humans) should be kept away from the vast sea of knowledge that defines and makes up this Universe, so as rival Universes would not be able to be created. This however, changed when Muyalakan was invoked in the past and allowed humans to develop in bursts of knowledge throughout the ages.
Traditional Hindus believe that Siva was sent down to suppress Muyalakan and crushed him underfoot and remains standing on him so as not to allow his escape (Muyalakan is immortal and cannot be killed). However, Dravidian Aaiyyanists believe that this is a analogy, and in fact Siva sent Apasmara to the Pishacha Tala (dimension) to suppress him from the rest of the entities in this Universe. However, 15,000 years ago Priests Aaiyyani Chudarmanian Adhavena and Aaiyyani Lavalian Gatisaman were able to formulate the scripts to break down the Pishacha Tala and converse with Muyalakan to thus open up the Vinayaka, Rakshasa, Asura and higher realms.
In other words, Apasmara aided the Kalaiyyans by teaching them the scripts to open up the higher Talas and Lokas that had been suppressed by the Gods. Many Aaiyyanists believe that there are people around the world (now and in the past) that have invoked Muyalakan to gain knowledge. This is why we have technological breakthroughs in short bursts every now and then as glimmers of the true reality are imparted to humankind.