|Release date||February 2001 |
July 2001 
|The following is a product description taken directly from LEGO. View the source here|
|Mighty as the earth|
Wise and powerful, Onua has huge, clawed hands to dig tunnels in the ground and infrared vision to allow him to see in the dark. Turn the wheel on his back to move his powerful arms!
Onua was released in 2001 as one of the original six Toa sets. The set consists of thirty pieces.
In addition to the instruction manual, the set includes a poster of Onua. The back of the poster featured advertisments for other LEGO products. Additionally, some copies of the set also contain a Toa Mata Mini Promo CD.
The set was included in 65024 The Complete Toa Collection, 65129 "Toa 3-Pack 1", K8531 Ultimate Toa and Turaga Collection Kit, K8532 Ultimate Toa Collection Kit, K8533 Find the Power Kit, and K8534 Toa Kaita Akamai, and K8554 Ultimate Bionicle Collectors Set.
Onua will swing his arms up and down when the gear on his back is turned. This function can be used to try to knock off the mask of another Toa or Rahi set.
The set's canister represents a Toa Canister in the story. Using heads and technic axles included 8525 BIONICLE Masks, the canister lid could be used for displaying masks, and as a representation of a Suva.
Onua wears a black Pakari.
8532 Onua's score on Brick Insights indicates average reviews. The set was praised for its atypical design compared to most of the other Toa Mata and the utility of his function.
- Some preliminary materials, as well the parts inventory page of the instructions for Akamai , depict the set with a white eyestalk. This was likely intended to be a glow-in-the-dark piece, which was prototyped with element ID
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