Beorn

[Tuor in Gondolin]

There's another interesting connection to The Might's
second theory. Recall that Sauron the maia shapeshifted
into a wolf to attack Huan. And there's JRRT's omniscent commentator's
observation that some of Beorn's descendants were bad guys,
which has some resemblance to the contrast of the Edain's loyalty vs.
the betrayal of some of the later arrivals to Beleriand.

Many of the Easterlings turned and fled, their hearts
being filled with lies and fears; but the sons of Ulfang went over
suddenly to Morgoth and drove in upon the rear of the sons of
Feanor...They reaped not the reward that Morgoth promised them,
for Maglor slew Uldor the accursed, the leader in treason,
and the sons of Bor slew Ulfast and Ulwarth ere they themselves
were slain.

Just had a thought. What about the Blue Wizards? Why not some
sort of connection to an ancestor of Beorn being schooled by
them, for some reason, in shapeshifting?