Thig

Performer: Frank Oz

Thog

Thog would later become a recurring monster on The Muppet Show. Thog is the only monster to retain the name given in the special.

Performer: Jerry Nelson

Lothar

The puppet would be refurbished for an unnamed dragon on The Muppet Show.

Performer: Jim Henson

Boppity

Also known as the "Blue Frackle"^[1], the puppet would later become a nameless Frackle on The Muppet Show and subsequent productions.

Performer: Frank Oz

Snarl

Also known as the "Cigar Box Frackle" ^[2], the puppet would later become Gonzo for The Muppet Show and subsequent productions.

Performer: Danny Seagren

Snivelly

Also known as the "Dripsnout Frackle" ^[3], the puppet would later become Droop for The Muppet Show and subsequent productions.

Performer: Jerry Nelson

Snickery

Also known as a Snerf.

Scoff

Also known as "Blue Frackle" in Henson's notes, the puppet would later become a nameless Frackle on The Muppet Show and subsequent productions.

Gloat

Also known as "Green Frackle" ^[4], the puppet would later become a nameless Frackle on The Muppet Show and subsequent productions.

Performer: Danny Seagren

Unnamed

Also known as "Snake Frackle"^[5]. The puppet would later become a nameless Frackle on The Muppet Show and subsequent productions.

Performer: John Lovelady

Unnamed

Featured as the guard. The puppet resembles a horned and beaked version of Thig.

Unnamed

Featured as the alarm.

Performer: John Lovelady

Unnamed

Unnamed

The puppet would later become Miss Kitty, a monster on The Muppet Show and subsequent productions.

Unnamed

Unnamed

Also known as the "Green Bird Frackle" ^[6], the puppet would later become a nameless Frackle on The Muppet Show and subsequent productions.

Performer: Jerry Nelson

Unnamed

The puppet was used for Thudge on The Ed Sullivan Show.