Sir Scratchalot is a robotic DJ/radio show host, and a major character encountered in TS!Underswap.
As a robot, Sir Scratchalot is composed of a head in the shape of a speaker with a screen displaying his face, a torso with two metallic arms, and a wheel for moving around. His face is composed by a handlebar mustache and two eyes, the left one having a monocle over it. He carries a staff, and wears a blue top hat and cape, resembling a 1900's Sack Suit.
While not much is known about Sir Scratchalot's behavior, it has been confirmed by the developers that he will have "old timey" characteristics.
- Sir Scratchalot is confirmed as the canon name for Napstablook's robot form. 
- On July 4, 2017, Sir Scratchalot's name and design silhouette were included in the thumbnail of a TS!Underswap fan-song by SoundCloud user Gibus, called "13th Friday Blues - Mechanical Swing And All That Jazz." This was done years before their official public release, with the thumbnail made by Beethovenus as an easter egg. 
- Sir Scratchalot will not have an "EX" form like Mettaton; instead, he will have something "different than one would expect." 
- In terms of appearance, personality, and music, Sir Scratchalot will have an "old-timey" feel. 
- Sir Scratchalot's design is inspired by the Securitrons from the "Fallout Series". 
- So Napstablook's name is Sir Scratchalot? And Undyne started a company?! Whoa! - Official TS!Underswap Tumblr
- It’s before we even revealed Sir Scratchalot’s silhouette or his name. - Official TS!Underswap Tumblr
- Will Sir Scratchalot have multiple forms like UT MTT? - Official TS!Underswap Tumblr
- The dapper Sir Scratchalot will definitely have an old-timey feel to him–in appearance, personality, and music. - Official TS!Underswap Tumblr