The Night Dr. Loveless Died - S3-E4
Continuity mistake: In the opening scene, a cowboy sitting atop the balcony above Big Brad's Bar gets up and approaches the balcony's edge twice.
Urutora sakusen dai ichi gô - S1-E2
Revealing mistake: When Bemular shoots his beam at Ultraman, the special effect actually does superimpose over part of Ultraman's leg as if he were hit, which is not what happens. (00:22:05)