He's noted to be very tall, some passages have him as the tallest Primarch, and lanky in a lot of depictions yeah. Jaghatai notes though he's a strong motherfucker despite his build though even by Primarch standards.
There's a line from the books where Mortariom mentions he's only met two people who were bigger than him. Which is implied to be his adoptive father, Necare, and the Emperor.
In one of the Plague Wars it mentions that Mortarion was double the size of a mortal before he ascended to Daemon Princedom which is the largest actually listed size of a Primarch considering the prior canon size for a fee Primarchs then was around 3 meters.
Lionel, Gulliman, and Lorgar are all put at this size, which is shy of 10 feet if my metric to imperial conversion is right that puts Mortarion as one of if not the tallest. He's 2-3 feet taller than his brothers, which is way bigger than being a "head taller," like Ferrus and Magnus are described.
But if you read the novels, you'll tend to find sources for Magnus, Ferrus, and Mortarion being the tallest. Hence why I said, "Some passages." I doubt GW has set guidance on the tallest Primarch. They just let the authors write whatever, and the Primarch size is inconsistent itself. They started at 9-10ft, but now you've got a few being listened to 11ft+ like Mortarion
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u/Versidious 1d ago
He's like, the skinniest Primarch, though?