The reason why the arm combinations were like that was, as mentioned in the article on the Beastformers Blog, due to the fact the concerning figures were so called ¨mold pairs¨ which was based upon the original base color of the original figs. So the reason why for instance the Greek Carp is found with the Gator arms is because of the fact both were part of the same mold (white base/skin color) and for some reason the correct arms have not been matched properly once they designed the Greek Pamphlet... Resulting in the fact they came out the way they are, looking odd for the majority of BB collectors outside Greece.
Good point on the weapons though because unlike the paired figures for the mold the weapons were created in a different mold, and from another material, away from the figures meaning there´s a big chance the composition of the Greek Beasts with the weapons on the Pamphlet is completely random. It is known that within Europe, in general, a lot of weapons were mixed up and came randomly packed with the Beasts. So far I don´t think we´ve a solid confirmation of a specific set of weapons being included in either the can/bucket or two pack box in Greece corresponding with a specific figure. Whereas the ¨wrong¨ arm composition, in our eyes, for the Greek Beasts is explainable there´s little to no change there´s a logic or theory behind the division of the weapons. 99.9% sure it was just a random factor. For (many of) the Greek collectors the GBB Pamphlet is guiding even though it seems to be based upon coincidence.
Personally in my own GBB collection I just match the weapons with the Beasts according to the original Beast composition ignoring the GBB Pamphlet
Battle Beasts, Laser Beasts, Beast Saga
Collector/Researcher/Trader/Reseller since 2011
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