The Boa Boa[1] (ボアボア Boa Boa?), also known as the 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

Card 090 (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. 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.
  2. Collectible card of Boa-Boa from Sonic Rivals.

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