I was having some convos in my head about sth.
Well, as we know, series phineas and ferb take place in the same world as all marvel heroes. We are also aware of a fact that perry and heinz are not only nemeses, but also archi-enemies, life long rivals etc. And also (though i did not watch the movie with 2nd dimension, so on this one i am guessing) we know that other dimensions exist (well no shit, lear). Aand alsooo, from all that episodes when characters were put into different historical ages, they were together with diff looks, we know that it is continuing for ages.
So, my point is that probably perry and heinz are together and meeting in nearly every dimension love/hating each other.
this is just so dang cute.
I also think it might be canon in spider-verse to have Danville and Drusselshtein.
it is very likely that everyone already know this info, but yeah, better later than never. i am out, PEACE✌🏼