They all act independently. Gero and #19 wanted exact revenge on Goku. #16, #17 and #18 just wanted to be free to have fun, enough that #17 killed Gero, and mainly wanted to hunt Goku for the sport rather than genuine malice. Cell appears from another timeline entirely and wants to absorb #17 and #18 against their wishes. Seeing all these different threats playing against each other is intriguing and a great mystery at first, but I found the way the arc cycled through them all to be slightly abrupt and jarring.ABED wrote: Wed Sep 09, 2020 5:51 pm How were they independent? It's a mystery so we don't know where it's all heading and why things are different from Trunks' timeline. Why would anyone be confused. Time travel causing changes to the timeline is to be expected. It would be so odd if things played out like Trunks said. It would be too linear.
I don't agree with your take at all.
It's more of a minor plot hole in the manga because Trunks outright states that Androids #19 and #20 were the ones that attacked in his timeline. That was before #17 and #18 were introduced, so Trunks later says he never saw the old geezer and the fat mime in his life, the real culprits are the twins.
For a long time, everything involving Trunks causing a butterfly effect confused the hell out of me, because it's never made clear what changes he could have made that would lead to such a radical change in the present timeline since he never interacted with the present Androids when he first time travelled there. I eventually concocted my own headcanon theory to make some sense of it like everyone else seems to.
And fair enough I guess. What's your take on the arc?