Ok here are tamaki's siblings information and some of tamaki's information as well. And before you ask tamaki and his siblings are still amajiki's while Izuku is midoriya so his father won't know that he has another child. Also inko became a pro hero once she got divorce and is only on break because she is about to have Izuku.

Name: Hana amajiki   
Age: 15
✯Currently Attending U.A high school, the hero course so she can become a hero with her twin sister✯
Quirks: Metal control: She can control any mental object or thing by either moving it with her mind or body. Although she prefers using her hands. Also she doesn't get affect if any mental hits her. And can create anything with metal.
Dark summon: she can summon these red circles that can summon these black type of tentacles out of the circle so she can hold anything or anyone with. Special moves: dark rush: she summons a lot of circles around her opponent/opponents while summoning as many tentacles as she can hitting and blinding her opponent/opponents until she capture them or knock them out.
Metal swords: she summons a lot of metal creating it in to a lot of swords before attacking her opponents/opponent with them.
Dark fusion: she summons her tentacles before gathering all the metal she can get and combining it, then makes one big fusion with them and attacking her opponents. ( she only does this when there is a lot of opponents with powerful quirks or emergency because it take a lot and I mean A LOT! Of her power and stamina before she can only use her quirks for about 2 minutes before passing out for 1 hour)
Hero name: ???? (What should her hero name be, please comment if you have one!)
Affects of using her quirks to much/long: metal control can make her whole body heavy, while dark summon can make her super tired and sleepy.
(What she looks like)

(What her hero costume looks like and what she has)

+ this extra weapon and support item

Name: Mizuki amajiki
Age: 15
✯Currently Attending U.A high school, the hero course so she can become a hero like her older sister (who is her twin just older by a minute)✯
Quirks: dark creation: she can create anything with the black goo she summons out of body or ground (the creations harden so it's very difficult to destroy them) (ex: weapons and people) eclipse: she can basically make/summon an eclipse anytime she wants or needs to, day or night. Also if she summons/makes an eclipse she is the only one who can see.
Special moves: ultimate BM: she creates a huge beast and monster out of goo before seeing it to attack her opponent/opponents (ex: dragons, snakes, scorpions, or type of demon creature)
Dark block: she summons/makes an eclipse while fighting her making them blind as she attacks them/captures.
Hero name: ??? (What should her hero name be)
Affects of using her quirks to much/long: eclipse takes too much of her power and energy and makes her eyes blue to help her still stand while dark creation makes her super hungry. So she usually has a food bag in her backpack and has a food pouch in her hero custom.
(What she looks like)

(What her hero costume looks like and what she has)

+ this extra weapon and support item

Name: Hiro amajiki
Age: 16
*currently in his second year in U.A high school, hero course with one of his sisters*
Quirks: speed up: he can speed up time to see what will happen and can make himself super fast energy drain: he can drain his opponent/opponents quirk, energy and power which causes the person to feel weak and useless. And can use it as his own power and energy. Which helps him make theses types of energy balls and weapons.
Special moves: energy blast: he can make a big blast out of the energy he has. energy wave: he can make a huge wave out of energy.energy strike: he combines both of his quirks and makes one strike.
Hero name: ???? (Don't know yet)
Affects of using his quirks to much/long: he becomes emotionless when he uses energy drain for to long and if he uses speed up for too long he freezes up for about an hour before he can use it again.
(What he looks like)

(What his hero costume looks like and what he has)

+ this extra weapon and support item

Name: Aimi amajiki
Age: 16
*currently in her second year in U.A high school, hero course with her brother*
Quirks: shape shift: she can turn into any animal, object, or person as long as she eats or know the object, person, or animal. Pyrokinesis: she can create an control fire with her mind.
Special moves: none, she doesn't care about any type of special moves because she thinks it's a waste of time so she just uses her quirks at full maximum when there is danger.
Hero name: ????
Affects of using her quirks to much/long: she gets headaches when she uses pyrokinesis way too much and gets super hungry when she shape shifts so she also has a food pouch.
(What she looks like)

(What her hero costume looks like and what she has)