Akame appears to be a very serious and coldhearted person which stems from her hellish training that the Empire forced her and her sister through, but it is eventually revealed that she is just socially awkward. She cares about her comrades very much and she is always worried that one of them may not make it out alive. When Tatsumi fought Ogre, she stripped him of his clothes to check his body for wounds.

She also tends to hide her emotions when it is revealed that a comrade dies, such as seen whenTatsumi mistakenly and incorrectly assume that she deals with it easily, because she is used to it. However, this prompts her to break into tears saying that she can never be fine when she loses a friend, for it is the most horrible thing of which anyone can experience. She is then comforted by a sorry Tatsumi who resolves to not die and never let her experience such pain again, making her smile.

Upon facing her enemies however, she shows absolutely no mercy towards them shouting words such as "eliminate" and "consign" to show the lack of mercy she has and also to strengthen her resolve to kill them.

Akame loves to eat and is surprisingly known to be a big eater (usually meat from danger-beasts and fish) much like her sister Kurome. Food is her passion to the point that Sheele noted how the "usually cool" Akame turned mad when she had burned some meat.