coward when

Gendo is shown to be more antagonistic towards Shinji than in the anime, first shown when he calls his son a coward when he refuses to pilot the Eva.

He persuades Kelderek to have Shardik drugged and put in a cage to help rally the troops, implying Kelderek is a coward when he hesitates about it.

He is equally at home misbehaving, being selfish, chasing other dogs and being a coward when more aggressive dogs are around.