Honestly, the credit check could be better.

I'm checking episode 6 of season 4 of Re:Zero and only 9 people are credited in the episode. IMDb lists 19 people, and 3 of the people who were actually listed are not part of that list of 19.

In fact, the fourth season is full of incorrect credits in its episodes. Many have no assigned characters, some list the actors' names as characters. I've been correcting it gradually, but I think IMDb would benefit from requiring evidence for casting, just as it does for "voice acting - dubbing".

Example: #261027-032016-549000