The gargantuan Mek-mar are unlike the rest of the marred for several reasons. First, they are usually between 9 and 15 feet tall (exceptional cases are almost 25 feet tall). Second, they have the capacity to emulate their environment in even more ingenious ways than their or-mar cousins. Finally, they resemble normal humans more often than not, usually devoid of the scarring and warped limbs, and with proportions comparable to a baseline human.
Their minds are even less affected than even the Ho-mar, but many Mek-mar exhibit bullying behavior and a lack of concern for the lives of others.
Mek-Mar use the statistics for Giants in the Fantasy Craft Core Rulebook