Caring - He's a friendly guy and has a sense of humour. He took on Junpei's bet of who could be the first to pick up a girl, and he doesn't mind teasing people he's close to. He can joke and laugh just like any other teenager, even joking about sneaking into Tartarus wearing Junpei's hat and can often make sarcastic jibes. He looks after those he’s close to and is very protective. Those who have the privilege of getting to know him well can see he's a trustworthy friend who won't give up on them and will fight for them no matter the cost. He still keeps in touch with Shinji after he left SEES, showing concern when finding out about the drugs Shinji took to suppress his Persona. 

Good Role Model/Calm & Collected - He's an able student and a good role-model, being a well-respected upperclassman and doing quite well in his exams as well as studying when necessary. His intellect is pretty high. He also seems cool and distant to those who know little about him, never getting overly emotional about things. He doesn't have emotional outbursts like Junpei and can work out a strategy for situations. He's a very good leader too because of this.

Strong-willed - Akihiko is very strong. He's the captain of his school's boxing team and has never lost a match to anyone. He likes taking on difficult challenges due to his competitive nature. He’s had no problems summoning his persona. He was also the first of the group to say he will take on Nyx even if the odds of winning are impossible. He would rather die in a struggle than give up without a fight. He’s also come to accept not to dwell on the past and to keep pushing forward, and not to obsess so much with strength.

Fear of Loss/Failure/Self Doubt - Akihiko’s biggest weakness is loss and failure. He lost his sister when he was young and felt like a failure for not saving her, and so he kept people at a distance for fear of getting too close to someone else he’d eventually lose too. His resolve after October 5th has lessened this, but it’s not completely gone. It’s something that’s been ingrained in him for many years so he will still have these moments of self-doubt and worries.

Awkwardness - When it comes to socialising, especially with girls, Akihiko is a pretty awkward guy. The girls at school literally throw themselves at him but he doesn't really see it and just sees them as a nuisance. The guy doesn't even know what love feels like until someone tells him. He also doesn't really make friends outside of SEES members and only truly opens up to those he knows very well. He comes across as aloof, distant and can be somewhat inarticulate to those who don't know him, and it can take awhile to crack open into the more caring and protective interior of his personality if you happen to be someone he doesn't know or trust.

Stubbornness- This can tie in with his fear of failure, but Akihiko is extremely stubborn. When he was injured he hated being stuck resting and recovering and wanted to sneak into Tartarus. He refused to accept that he lost Junpei’s bet. His fear of failure causes him to be this way, not wanting to accept failure and defeat because it would be accepting a weakness and he hates feeling that way. He will overwork himself to become stronger and take on great risks to prove himself. It’s likely to put him in dangerous situations as it has done in the past.

He's a boxer so he's a naturally good fighter. Since he hasn't lost a match that says a lot about his strength. He can summon his Persona - Caesar - to aid him in battle using his evoker.

Since I'm taking Akihiko from the middle point of the game Caesar is about level 50 so he still only has skills from when he was Polydeuces. Caesar will level up when appropriate.

A list of the skills Caesar has at this point are as follows:

Zionga - Inflicts a moderate amount of Electricity damage on one enemy
Mazionga - Inflicts a moderate amount of Electricity damage on all enemires
Elec Boost - Increases Electricity damage output by 25%
Diarama - Recovers a moderate amount of HP to one ally
Sukunda - Decreases an enemy's Agility for 3 turns
Rakunda - Decreases an enemy's Defense for 3 turns
Matarunda - Decreases all enemies' Attack for 3 turns
Fist Master - Inflict double damage with a Fist equipped

Skills Caesar can learn and at what levels are here.

His clothes
Boxing gloves
Wicked Cestus - his fist weapon
His evoker
A Rabbit Doll