Ben 10K's daughter is named Gewndonlyn Tennyson yes named after the Gewn we know just go to Ben 10K's wiki page and click on his daughter Gewn
Sense in omniverse it revealed that Devin Levin was just a false memory but heres what I think Devin's memory was real before you call be out here me out. If Devin never existed then how did Kevin get a picture with him if he never existed also when Max stated that Devin wasn't real to Servantis said "Hmmm sharp as ever" yeah it sounded like he was lying to them by saying Devin wasn't real and we know Servantis is manipulative so it would make sense that he was lying to Max saying that Devin wasn't real just to mess with him and maybe Max didn't reconize Kevin in the original series if he was Devin's son well maybe he didn't reconize him from when he was a child cause when you get old you tend to forget stuff or maybe Max did reconize Kevin and sense Kevin was insane in the OS Max probably didn't want him to know the truth and not wanting to mess up his mind EVEN more.
So that's my theory on Kevin's dad
Same but sense Glitch is half galvanic mechamorph can't the omnitrix scan Glich so Ben can get Upgrade back or maybe Azmuth out a backup mechamorph DNA in the omnitrix just in case but then again the scanning feature hasn't been introduced in the reboot yet also I think when Ben meets Azmuth in the reboot he'll add a feature in the omnitrix that'll allow it to hold more then 10 aliens and get new ones without locking the other one and getting some of Ben's old aliens back
To be honest I miss all of them also Stinkfly is also now locked being replaced with Jetray
My order would be the ones he'd use each series
My top are
And so many more