Mesh Deformation Issue: Mesh doesn't follow bone

Hi friends!

I’ve attempted to create and rig a character from Baymax today and I’ve run into an issue where my rig doesn’t follow the bones. Attached is a complete view of all of the bones, the weight paint for that bone, a video of me moving the bone, and the Blend file. The expected outcome is that each bone should be able to move the designated part of the mesh completely and not deform or shrink. The same outcome happens in Roblox, it isn’t just a Blender thing.

Thank you so much for your help!

Complete view of all bones

Weight paint for the bone in the video

Video

Blend file
Blend file VirusTotal Result

Doesn’t that section in red/orange have the Normals reversed?

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