Wendolo was creepy as he appeared in his Einst form however the power of three giant houses took him down with ease. Gilliam's mention of the girl is probably the same one from Hero Senki. Even the music when he started the System XN is Hero Senki.
Now the head of the Einst has appeared! Can our heroes save the universe and will we see Gilliam again? Also, if they followed the game scenario, there is one more secret enemy they have to battle! See you next week for the final conclusion!