I at least see Koridon and Midiron having to do with help from Celebi as they both appear in the same area in both games. Either that or be like the Lati sisters
The Bikes are already in the present thanks to the time machine, but I could see them asking Celebi to bring them things from their home Era.
I like them being related, Koriadon could be Miriadon's Great Great Great Great X1000 Great Grandma!
