How I Play Him/ Who is Marluxia (Mar-loo-sha):

Marluxia is what’s known as a Nobody and is No. XI of Organization XIII. Nobodies are the empty shells of beings who have lost their hearts to darkness. Without a heart, they live with only a body and soul. Marluxia is among 13 of the most powerful Nobodies who formed a group called Organization XIII. They are particularly unique because, instead of turning into a more-creature like version of a Nobody, which is typical, they’ve retained their human bodies, their past memories, and also have a sense of self awareness and intelligence that other Nobodies do not. Their powers also vastly outrank those of the lesser Nobodies. This and their being able to retain their human form and survive after losing their heart is because they had very strong hearts in the first place. Because a Nobody is devoid of a heart, they do not possess emotions; they cannot feel emotions, but they are able to understand emotions well due to their memories of once having a heart and from observing other beings with hearts.

Marluxia, however, has no memory of his life before losing his heart, setting him apart from many of his comrades. No one but Marluxia himself is aware of his amnesia (ostensibly). 

Physically, he is tall, one of the taller members of the Organization and is probably around and over 6’ (no canon height). He has shoulder length hair, which often varies in color in-game and in canon artwork, but it is generally a pink color– Typically a dusty, pink rose hue. He has a warm skin tone and bright, blue eyes. Marluxia is described as being a very tall, elegant, handsome, somewhat effeminate-looking Nobody. 

“His pretty face hides ugly motives.”

Among Organization XIII, Marluxia is one of the most emotionless members beside Xemnas and Saix. His general demeanor is impassive, but he is very cordial and agreeable among most members of the Organization; he does display coldness sometimes when he speaks to certain other members of the Organization, to non-Organization members, or when issuing orders or discussing a serious matter. He is a pretty serious person and though generally impassive, he smirks quite frequently and may chuckle or laugh.

He is the leader/mastermind of an internal rebellion within the Organization and plots to overthrow it.

 He is very clever and manipulative, and everything he does or says has a purpose. Whether or not he considers someone useful, or of importance, will affect the way he treats them, as alluded to above (Possibly meaning your character as well). He is very deceptive in nature and thinks highly of himself, being very arrogant and vain. Marluxia believes he deserves much more respect than he is given, being as powerful as he is, and desires superiority (It could even be considered a superiority/inferiority complex). He takes great pride in his appearance and his most prized/only possession would most likely be the large scythe he wields, the Graceful Dahlia.

Although he joined Org. XIII later than most of the other members, seeing as he is No. XI and their numbers show their order of joining, he was appointed the position of Lord of Castle Oblivion due to his power and ability. Castle Oblivion is Org. XIII’s second base/headquarters and while stationed as the leader there, Marluxia oversees a variety of ongoing missions; he himself was also appointed as the caretaker of Namine.

His attribute/indv. element is Flower and he wields a scythe: the Graceful Dahlia. He is No. XI of Org. XIII and bears the title “Graceful Assassin”, as well as Lord of Castle Oblivion.

Being the Lord of Castle Oblivion gives him a lot of power over the other Organization members, making him the third most powerfully ranked member in the Organization when it comes to command. He is a very adamant member of Organization XIII and is deeply devoted to accomplishing his own goals (overthrowing the Organization so that he is the Superior, creating and obtaining Kingdom Hearts, and of course obtaining a heart, becoming whole again, and regaining his memories) as well as the Organization’s goals.

“All in all, Marluxia is a very egotistical, manipulative member of the Organization who would stop at nothing to overthrow the Organization and become superior.” - Marluxia, khwiki.net

From a Recent Question:

Marluxia isn’t a  flirty, flamboyant, flaming, pervert who sexually abuses people– And I loathe that the fandom both created and widely accepted that homophobic stereotype (Fandom!Marluxia). Please do not expect anything relating to “Fandom!Marluxia"on this blog.

I also do not incorporate manga events into my muse as I do not consider it canon and it is more of a parody of the series as a whole.