Sandbloxx appears similar to Sandbox, but has Bloxx's blocks on his hands, shoulders, chest, eyebrow, and jaw.
Sandbloxx wears the Omnitrix on his forehead.
- While Sandbloxx did not display any powers in his appearance, he retains the shapeshifting and regeneration of both aliens.
- Sandbloxx has Sandbox's density shifting.
- Sandbloxx has Bloxx's weakness to acid.
- Sandbloxx has Sandbox's weakness to extreme heat.
- Ben unintentionally became Sandbloxx in The More They Stay the Same when attempting to become Bloxx, trying to determine what was wrong with his transformations.
- The More They Stay the Same (debut, selected alien was Bloxx)
- Sandbloxx is a "temporal fusion." He was caused by Ben trying to access Bloxx from the original timeline while the Omnitrix was still adjusting to the new history, causing it to select both the Segmentasapien DNA sample from the original timeline, and its Shakaralramal replacement in the new one.
- Sandbloxx's art was a Sandbox design made by TheHawkDown on DeviantArt.