The Boa-Boa[1] (ボアボア Boa-Boa?), also spelled Boa Boa,[2] is an enemy that appears in Sonic Adventure. It is a mass-produced, caterpillar-based robot created by Dr. Eggman.


Based on caterpillars, Boa-Boas are successors to the Caterkiller. They have purple and gray armor and a body consisting of nine segments, with the head on one end and a small tail on the other. Except for their head, all the Boa-Boas' body segments have hatches on both lateral sides that spit out flames.

Game appearances

Sonic Adventure

Boa-Boa floating above Sonic and Tails in Windy Valley.

In Sonic Adventure and Sonic Adventure DX: Director's Cut, the Boa-Boas appear in the following Action Stages for each character:

Character Action Stage
Sonic Windy Valley, Icecap, Lost World
Gamma Windy Valley

In gameplay, Boa-Boas constantly glide gracefully through the air, spouting puffs of flame from their sides. In Sonic's chase, the player can attack a Boa-Boa from above or below using the Homing Attack when it is not spitting flames (doing so will damage Sonic). Hitting any segment on a Boa-Boa will blow the entire robot up. When playing as E-102 Gamma, the player can take advantage of the Boa-Boas; for each body segment the player locks onto and hits, they are granted a Time Bonus.

Sonic Rivals

The Boa-Boa's card in Sonic Rivals.

In Sonic Rivals, the Boa-Boa appears as a collectible card.


  • The Boa-Boas' name may be allusion to boas, a family of non-venomous, constricting snakes.
  • The appearance of the Boa-Boas seem to be mix of the Catakiller, Jr. and Fireworm.

See also


  1. Collectible card of Boa-Boa from Sonic Rivals.
  2. Bryan Stratton (17 June 2003). "Sonic the Hedgehog's Action Stages". Sonic Adventure DX: Director's Cut: Prima's Official Strategy Guide. Prima Games. p. 20. ISBN 978-0761542865.

Main article | Scripts (Sonic, Tails, Knuckles, Amy, Big, Gamma, Super Sonic) | Staff | Glitches | Beta elements | Gallery | Re-releases (DX | 2010)
Community content is available under CC-BY-SA unless otherwise noted.