Okay, I only read Rae sporadically, and could not list many characters for you. But this still leaves a whole lot that cannot be explained without spending a few years in immersion learning of anime. What the after-all is going on, anybody!
In case it you think it would help to consult other recent Sunday “Echidna-Lad!!” episodes, here are a couple:
Thanks to jjmcgaffey for suggesting Rae the Doe, and
for calling this “a kerning pun!” to assist anyone who may find it puzzling.
And an OY-semi-CIDU from Maggiethecartoonist:
This song is in that peculiar category of musical quasi-familiarity, where I became acquainted with a piece from its use in advertising, or as a television theme song, that I probably never would have run into otherwise. “New Soul” by Yael Naim. “You’ve Got Time” by Regina Spektor.“One Week” by The Barenaked Ladies (this one I might have found otherwise). “Flower Duet from Lakmé” by Léo Delibes (this one I surely would have run into sooner or later, but did encounter first in the British Airways ads). Most of those I put in a playlist at some point or even bought further work from the same artist ; but “Mister Roboto” always remained for me just “that song from one of those car commercials” until last week, when this cartoon appeared and I wanted to verify the idea suggested by the pun. (BTW, the car brand turns out to have been VW, and the sketch uses comic actor Tony Hale.)