Kirby's Dream Land artwork
|“||Each time Kirby hits the Bumpin' Boo on the left side of the machine, a letter in the word "WARP" will light up. When the pinball hits the Bumpin' Boo on the right, a letter in the word "STAR" will light up.”|
|— Kirby's Pinball Land instruction manual|
Booler is a nearly transparent specter. He glows with an eerie blue glow and has a wicked smile on his face. Booler has a long, wispy tail and often bears his large red tongue in a childish manner. Booler is also shown to be trailed by a paranormal flame in official artwork, which is a common trait of many stereotypical spirits.
In Kirby Tilt 'n' Tumble, they don't stick out their tongues out but have a tendency to get angry if Kirby bothers them.
To date, Kirby's Dream Land is the only platformer that Booler appears in. The rest of its appearances are all in early spin-off titles.
|“||This unfriendly ghost is one of the speedier enemies in Dream Land. Move into position quickly and then gobble up the ghost with one big gulp.”|
|— Description • Nintendo Power (Volume #39)|
- In Kirby's Pinball Land's Super Game Boy palette and the instruction manual for Kirby's Block Ball, Booler appears lavender instead of light blue.
- A ghost enemy from the Super Mario series called Boo heavily resembles Booler. However, Boos hide their faces when they are seen by their victims, unlike Booler. Coincidentally, Booler's name in Kirby's Pinball Land was "Bumpin' Boo."