He's huge, but then he is related to AZ xDBy the way, how tall is Lysandre? He's practically towering!
In the games I had a look as to how tall he was, he's taller then Sycamore and the one time he's stationary I put myself (so Serena/Calem) against him and only came to shoulder height.
This spin-off anime maaaay have only spiked my interest because Lysandre's in it.
He certainly knows how to make an entrance.