Isn't he a little too old for her I mean age doesn't mad but still he's like way older tha...

We already know that Maybelle is 10. Abel is 12 and he has said in an earlier chapter that the silver haired guy (don't remember his name) is only one year older than him. So then he must be 13.
3 years age gap? ╮(￣▽￣)╭

Oh if it's 3 years I don't see a problem I thought she was 5 or something her firgure is undeveloped

Well yeah, she was starved and abused by those assholes before meeting her real dad. It would be more surprising if she werent underdeveloped.

Bellerophon's height is above average, too. he's tall for 13/14 y.o child (already in 160 cm, based on the height chart on author's twitter. Phon's age in the imperial calendar should be 14, but his birth only got acknowledged 1 year later because reasons, and the boy didn't bother to add up anymore so he used the 13 y.o XD )

Abel's height will catch up after hibernation, but Aslan must be taller than both Abel and Bellerophon because of his genetic XD.

Here is the age list :
> Season 1 :
Maybelle 10, Phon 13/14, Abel 12, Aslan 14
> Season 2 :
Maybelle 11, Phon 14/15, Abel 13, Aslan 15
> Season 3-1 :
Maybelle 14, Phon 17, Abel 15, Aslan 17 (The boys don't have their birthday on that year. Maybelle celebrated her birthday first <in the new year>..)
> Season 3-2 :
Maybelle 18, Phon 21/22, Abel 20, Aslan 22

I see... thanks for the info

he's suppose to be 15 and the little girl is 12 ╮(￣▽￣)╭ so I don't think so. often I've noticed that the females in these manga's are portrayed as very young until at 16 years old

im 14 and my height is 173 (●￣(ｴ)￣●)

You're too tall

yea sometimes i ask my mom “mom what the hell did u do when i was a baby that caused me to become this tall? am i sick?”