Why did they go out of their way to make dedenne look like

>>26398791
they didn't
you're the one making these assumptions

>>26399252
youre one of these people who say luvdisc doesnt look like amomomomola right?

>>26398791
What is this phenomenon called, when two completely unrelated species developed similar features separately?

They don't.

>>26399328
Lack of creativity

>>26399328
convergent evolution

for when they retcon raichu as pikachu's evolved form and have dedenne evolve via a new held item into raichu