GameCube languages:
Thanks, fixed in latest commit.
https://github.com/kwsch/PKHeX/commit/8d0af0bd5ba71077dc0a9eacb0a612ea2d6b16da
Togekiss:
hacked to begin with. Relearn Moves are invalid for a Daycare egg; since it was not a daycare egg, it was being assumed as a gift egg incorrectly. Behavior updated, should now resolve both issues.
https://github.com/kwsch/PKHeX/commit/9699cdefaedb5b189ac7a8a3b26dc14da349e59a
Feraligatr:
No handling trainer value, thus never traded away from your OT on X/Y. Tutors are exclusive to ORAS. If it's never been traded away it's either visited a cloned trainer detail trainer (same as OT) or has never been traded = hacked moves, thus the pkm has been hacked. Bigger sign that the OT is cheating as it has never visited another trainer
Beedrill:
"You can catch Kakuna in Blue/Red on Route 24 and 25 as well as in Viridian Forest. You can also evolve it from a Weedle (which is really what you should do), however, in Red and Blue, a Kakuna evolved from a Weedle will not learn harden. Kakuna is not in Pokemon Yellow."
Yellow's move table doesn't have any learnset moves for Kakuna either, so I assume there must have been some patch to the VC game? Or some undocumented behavior?