Factual error: Cynthia comes homes after food shopping. She takes the food (sandwich turkey, mustard, tangerines, paper towels and napkins) out of the shopping bag. She makes Joe a sandwich and uses the new mustard without having to remove the protective seal first. All new mustard squeeze bottles have a protective seal that has to be removed first before use. (00:20:00 - 00:22:00)
Die Glocke - S4-E6
Other mistake: When Jones is trying to convince Herr Waesch that she's the owner of the estate where his gala is being held, subtitles of his reply read "I personally procured this home. It's owners were French." The contraction "it's" should be the possessive "its."
Continuity mistake: After Genos burns the swarm, it burns off Saitama's clothes, a sign falls down and covers Saitama's genitals in censoring. When the camera angle changes to behind him, the sign disappears.
Factual error: As Ren enters Renautas and meets Emily, the word "Welcome" keeps scrolling in various languages on the screens in the background. Although hardly seen, the Hebrew is wrong, as it is reversed (text from left-to-right, as opposed to right-to-left).
The Left Hand of the Magician - S1-E5
Factual error: The contract signed towards the end is written with the wrong characters - it is missing accents on vowels that require it in Italian "è stabilito", "così." (00:19:15)
Food Fight - S3-E2
Continuity mistake: At the start after Teddy steals Oscar's fries, he eats them, leaving his fork empty. The angle changes and suddenly there are plenty of fries on his fork.