Weapon X, Lies, and Video Tape - S3-E19
Factual error: Beast inserts the video tape into the VCR upside-down. (00:13:00)
Savage Land, Strange Heart (2) - S3-E9
Factual error: The amount of rubble that falls on Storm and buries her should have crushed her to death. (00:18:30 - 00:19:20)
Savage Land, Strange Heart (1) - S3-E8
Factual error: The amount of rubble that falls onto Sauron would have easily killed him, as his mutant powers do not include the ability to be impervious to heavy damage. (00:18:30)