Board Thread:New on Ben 10 Wiki/@comment-24072316-20141114050508/@comment-1413089-20141114161558

Then where's Devlin? or why is it Kevin hasn't spent most of the series as a villain only occasionally escaping the null void the events of Ken 10 CONFLICT immensly with the series that has been presented. Oh yeah and in "Ken 10" Kenny had a sister "Gwendolyn Tennyson" where did she go if the events of that episode were canon. What was actually stated was they were going to use the future Ben from the original series rather then UA future Ben, not that either was necessarally present time Ben's future.

Where was it ever stated that "Ken 10" happend in the same timeline as "Ben 10,000" or "Ultimate Ben 10,000"? No where. The only way for things to make since is if Ken 10 happened in an alternate future from both episodes. Otherwise you run into rather large continuality issues.