Hm, I guess just 'made on Cybertron by the Decepticons who stayed their' would also make sense. I mean, killing Megatron and Optimus wouldn't stop Shockwave from being around, after all.

 

I think it makes enough sense.

It's pretty cool to still have discussions like this that wasn't oh G1 plothole that the writers clearly didn't care about.

 

You just have to read the negative comments in the movie section. But while I hated Beast Wars, I came to love it.

What's the difference between Cybertronians and G2 Cybertronians? And do you mean the Insecticon Swarm with The Swarm? And isn't Liege Maximo also a Decepticon? I did not read the comics.

 

From tfwiki

Sideways seized control of Vector Prime's Facebook page and, after cheerily saying he was probably lying about everything, said he thought all other Sidewayses were losers so he killed and replaced them, implied that he was the Revenge of the Fallen Sideways, and then went on to claim he wasn't Tarantulas and then implied that he was Tarantulas. His reign of uninformative terror was finally brought to an end when the TransTech found him out and began trying to break into his hideout. Shortly afterwards, a question from David Willis caused his head to explode, forcing him to temporarily powerlinx with Rook and escape to parts unknown.

 

He did it in Armada. He employed Sideways as a double agent to undermine both the Autobots and Decepticons.

Looking at the Cybertron incarnation of Sideways, I like to think that he may be G2 Skyjack. They sport similar colour schemes and visor covered faces. Skyjacks function is a spy which ties in with the double agent thing.

 

Also in the 3h comics tarantulas served unicron

With the Matrix in hand, Tarantulas returned with his troops to his lair. Here Tarantulas oversaw Iguanus and the others construct a transwarp portal so that Tarantulas could bring his prize to his master, Unicron

Tfwiki