Skid And Pump/Spookeez

Skid and Pump are a duo of small children in Halloween costumes. Skid wears a skeleton costume consisting of a black outfit with white lines and circles representing bones and a skull head mask with black markings around the mouth. Pump wears a pumpkin man costume consisting of a black suit with a white shirt underneath, white gloves and a pumpkin head mask.

The pair work in tandem with Skid resting atop Pump's head. The two share a microphone, though Pump holds it in his left hand by default. They do the Spooky Dance whenever they are not singing.

Origin
Skid and Pump originate from the Spooky Month web series created by Sr Pelo, a series of annual Halloween-themed videos that started in October of 2018. They are known for their love for the Spooky Month (regardless of what month it actually is) and their adventures in their hometown that lead to unintentional trouble and good-natured chaos, along with their famous dance move known as the "Spooky Dance."

Personality
Deriving from the Spooky Month series, Skid and Pump are rather childish and gullible. They love Spooky Month so much that they wear their costumes year-round and constantly spread the word of it around. Their fun-having attitudes have risked them being kidnapped a couple of times and led to them encountering many shady people around town without a thought to their own safety. Their highly accepting behavior persists in Friday Night Funkin' when a certain lemon-headed being tricks them for his own gain.

FNF Test Playground 1
They both have there regular appearance and there vocals are taken from there first song Spookeez

Pressing B will activate Skid and Pump to "ITS SPOOKY MONTH!!"

and they will dance faster than usual

FNF Test Playground 2
They gain there b side appearance and nothing else changes