Eric Judy

Seen playing through a Hartke amp here

At 1:40 in this video, there is a clear shot of Eric Judy playing a Fender Precision Bass.

Judy can be seen with the Thunderchief in photos posted in an article by 904 Happy Hour. This bass does not appear to be an instrument that Judy uses regularly, but he has used it in the past.

at 7:58 in the video, eric is seen with this bass, as well as most live performances taken around this time.

At the start of this video Eric is seen holding this bass, this seemed to be his main bass throughout the moon and antartica phase of modest mouse.