Carpenter (The Adventures of Strax & the Time Shark)
From Tardis Wiki, the free Doctor Who reference
Strax and the Time Shark arrived in Medieval England to help a carpenter. He needed Strax to protect the perfectly square table he made for King Arthur. Strax pulls out his blaster and promises to keep the table safe. While the carpenter was gone, a squirrel went on the table, prompting Strax to open fire at it. The carpenter returned to find his square table perfectly round. (COMIC: The Adventures of Strax & the Time Shark)