Gossamer sees a mirror & its shadow (apparentley the first and only time) the shadow runs away "him" through numerous walls, screaming as it ran away.
Gossamer ran away, after Bugs Bunny pointed out the theatre audience to Gossamer and cameras, just like its shadow ran away, three minutes earlier that the filming was occurring. Gossamer then ran away, after looking & saying People! in extreme fear or shock. Less than five seconds, after Bugs Bunny scared Gossamer away, Peter Lorre charactered evil-scientist second mechanical rabbit smooches Bugs Bunny & attracts him, Bugs follows it. After saying "So, it's mechanical!" & starts following it, the closing credits & music begin.
The second time Bugs Bunny defeated Gossamer/Rudolph the white-sneaker and large orange-furred monster, that is extremely eerie, wearing a knight or gladiator's uniform, Bugs Bunny hits it, while conducting a train. After hitting the knight uniform with a sword, the metal uniform then hits a wall and is turned into a tin can. The tin can is titled "CANNED MONSTER".