Cookie3001
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- Oct 1, 2018
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Yeah, I believe Rick Lyon puppeteered Grover in most scenes. If Frank's voice was dubbed in for the full special he did an awful lot of improvising with Grover, I thought he only did that when performing a character live. And on unrelated not there is apparently a scene where Kevin is doing Grover and one short line ("yes sir") remains undubbed, I'll have to keep an ear out for that next time I watch it