Continuity mistake: Benkei is talking with the Getter team for the first time and promises to fix Genki's model airplane. The wings are broken in a different way between shots. (00:08:20)
Mystery of the Fearsome 100 Demon Empire - S1-E2
Other mistake: When Joho is looking at 'the crazy guy' praying under the dam, the racquets in his hand (assuming that's what it is) are misshapen. (00:10:15)
Mystery of the Fearsome 100 Demon Empire - S1-E2
Continuity mistake: The toy plane in Benkei's cockpit changes shape from the first part of the episode. (00:23:10)
An Insidious Trap! The Flying Fleet - S1-E3
Continuity mistake: The little bird that falls with Genki from the top of the building (surely that kid is something else, being unscathed falling face first from that height) lies in a different spot of the pavement between shots. (00:02:35)
An Insidious Trap! The Flying Fleet - S1-E3
Continuity mistake: When Ryoma and Hayato launch their ships after the smoke temporarily clears, you can see in the hangar the Getter Poseidon, which is still outside in the forest with Benkei. (00:16:35)
An Insidious Trap! The Flying Fleet - S1-E3
Revealing mistake: When Hayato attacks Bullface with the Liger missiles, the explosion does not follow at all the outline of the ground, it just cuts away in a straight line superimposed in the wrong spot. (00:18:15)