LOOK: OPM icon Freddie Aguilar is now in COMELEC to file his senatorial bid under PDP-Laban | via @JervisManahan #Halalan2019 pic.twitter.com/eBBEwK4QBr — ABS-CBN News (@ABSCBNNews) October 10, 2018

MANILA - Folk singer Freddie Aguilar, a man who claims to be the "Hari ng Pilipinas (King of the Philippines) and a man who once claimed to be Kris Aquino's husband are early birds on the first day of filing of certificates of candidacy for the 2019 elections.

Aguilar, a known supporter of President Rodrigo Duterte, arrived early at the Commission on Elections main office in Intramuros, Manila Thursday to file his COC for the position of senator.

Dating nagpakilalang asawa ni Kris Aquino na si Daniel Magtira, naghain ulit ng COC. Pagsusulong ng Pinoy rock band, tututukan kapag naupo sa Senado. | via @JohnsonManabat #Halalan2019 pic.twitter.com/gh78NDeTxi — DZMM TeleRadyo (@DZMMTeleRadyo) October 11, 2018

Speaking to radio DZMM, Aguilar said he had been pushing for a shift to a federal form of government during the first national elections after the 1986 EDSA People Power revolt.

"I have 40 years of history advocating for change. All you have to do is listen to my songs like 'Katarungan' or 'Sa Kuko ng Agila,'" he said.

He added he is filing his COC early since he needs to leave for Canada for a series of gigs.

If elected into office, Aguilar said he will push for protection for entertainers by ensuring that they have weekly, monthly or yearly contracts. "We entertainers have no tenure. Our managers or bosses can remove us anytime. If I win, I want to protect our entertainers," he explained.

Other electoral hopefuls have also arrived at the Comelec office Thursday to file their COCs.

Daniel Magtira, who once claimed to be the husband of TV host Kris Aquino, is again trying his luck at the polls despite being declared a nuisance candidate before the 2016 polls.

Emilio Delfin Tagean filed his COC for senator, identifies self as 'King Salam of Maharlika Kingdom', vows to fight for the disputed territories in West Philippine Sea. | via @rongagalac #Halalan2019 pic.twitter.com/GYzsP7VRJj — ABS-CBN News (@ABSCBNNews) October 11, 2018

Magtira said he will push for the revival of Pinoy rock if he is elected into office.

Another early bird on the first day of filing of COCs is King Salam Emilio Delfin Sr. from Bicol.

Delfin, who described himself as "Hari ng Pilipinas (King of the Philippines), said he wants to change the name of the Philippines to

"Power of Maharlika Kingdom."

Delfin was also declared a nuisance candidate before the 2013 elections.