A participant wearing a costume walks past spectators during a Halloween Parade in Marikina city, east of Manila (Reuters)

A shark passes by as a diver dressed in a skeleton costume for Halloween feeds fishes inside a fish tank at the Sea Life aquarium in Berlin (Reuters)

A vendor sells masks to passing motorists for the annual Halloween tradition in Manila, Philippines (AP)

Two young boy's dressed for Halloween prepare to trick-or-treat in a housing compound in South Jakarta district in Jakarta, Indonesia (AP)

A young boy dressed for Halloween prepares to trick-or-treat in a housing compound in South Jakarta district in Jakarta, Indonesia (AP)

Visitors to a house covered in Halloween decorations look over the scene in the front yard in the Chicago suburb of Naperville (Reuters)

A private open-air bazaar is selling pumpkins of all sizes as decoration, ahead of Halloween that is taking root in Poland (AP)

A man walks by a parody film poster featuring an illustration of defaced Hong Kong Chief Executive Leung Chun-ying in the occupied area of the Mong Kok district of Hong Kong (AP)

A visitor to a house covered in Halloween decorations looks over the scene in the front yard in the Chicago suburb of Naperville (Reuters)

A child wearing a big skull participates a Halloween costume festival in Tokyo (AP)

Victoria Viscardi arrives with her dog Gia during the 24th Annual Tompkins Square Halloween Dog Parade in New York (Reuters)

JohnPaul Trotter, 31, rides a wave dressed as President Ronald Reagan after competing in the 7th annual ZJ Boarding House Haunted Heats Halloween surf contest in Santa Monica, California (Reuters)

A competitor rides a wave during the 7th annual ZJ Boarding House Haunted Heats Halloween surf contest in Santa Monica, California (Reuetsr)

A student wears a mask as he gathers with others during a halloween party at a school in Bangkok (Reuters)

Participants in zombie make-up dance to late U.S. singer Michael Jackson's "Thriller", during a "Zombie Zumba Dance" event in Malabon city, north of Manila (Reuters)

Two-year-old Shunto, wearing a Halloween outfit, sits on pumpkins before a Halloween parade in Kawasaki, south of Tokyo (Reuters)

A boy tries on a mask at a costume shop ahead of Halloween in Lima (Reuters)