Lesser known variant - the AGM-83A:
I should have included more in the OP. Edited to include additional links for the AGM-79 Blue Eye, AGM-80 Viper, and the AGM-83 Bulldog. This covers most everything to do with the Bullpup family of missiles and derivatives and now merits moving the topic to the ideas and inspiration section of the forum.
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With the abundance of Bullpup missile shapes included in the Hasegawa weapons sets, Trumpeter kits, and a desire to not model an actual AGM-12 Bullpup it makes sense to look at cutting missile shapes apart and rearranging them to come up with something interesting.
The real weapons based on the AGM-12 were all done with minimal modification to the forward section of the weapon. How about cutting the seeker section from a Walleye, Maverick, or HOBOS weapon and mating that to the AGM-12 Bullpup? Mate the small control fins to the new seeker section and you would have an interesting alternative to the AGM-65 Maverick. Do this with the larger AGM-12C Bullpup and it would create an even more impressive looking weapon.
There is also mention of a cluster bomb derivative of the Bullpup. To create something similar you could take the Mk20 Rockeye minus the fin section and attach the guidance section to the nose and the motor section to the rear and create your own interpretation of this weapon.
Another interesting alternative was a jamming missile based on the Bullpup with the warhead replaced with an electronic countermeasures pod that might be modeled by adding a couple antennas and bumps to a Bullpup shape.