i found the name  “The Brick-in-the-Hat Trick” from a website the talks about pranks in the Victorian era and this is one of them. this takes place during or before the events of Jekyll and Hyde and the Pegasus far right the little colt is Matthew he is how do you say the master mind of the  plan his cutemark is a sling shot and a book to show that he is mischievous as well as smart story time:

how he got an education well i’ll say he  stole some books because he is poor and what he has to do with the AU well he brought the invasable pony to life and how or why well he found out from the guy ho stole the papers from the invasable pony was suspicious of him and seek in to his inn and found out that he has been looking at the papers/books and steels them because he taught the invasable man could help him get back at rich pones who did not help him or his family because it’s still really hard to find work as well as maybe help him in pulling pranks also he knows what happened to the invasable pony so he does not want to turn invasable or else something simaler would happen so he went to or seek in to a museum and found the Frankenstein monster or Adam and ask ho did victor Frankenstein brought his creation to life of coarse it something to do with electricity. so he found some stuff and found (i think because it seems more realistic) a macieane that would use that type of thing or he work on it ether way he found something that could help him bu i was thinking he was in an abandon place or something id but anyway he got what he need; then he soon found out where was the invasable pony barred maybe from the guy or he found out about the place he was at and ask the place from there and told him so when it was night he grabbed some shovels and later fix the  invasable pony’s body then did the thing simaler to victor Frankenstein an brought him back to life  and told him he was interested and needed help and that he has his papers and  since is like wanting to get back at some ponys it would give griffin an excuse to do mess  with them but Matthew ask what exactly happend to him and how he turned invasable so he told him (oh ya the invasable pony also said his name was griffin)  and once (maybe Matthew said he got the papers form the guy who stole them or griffin ask how he got the papers) so maybe first they mess with the guy ( guy who’s name was Thomas marvel the guy who stole the papers) first and them mess with others so Matthew became griffin’s assistant who was actually loyal to him but soon wile this was happening griffin was happy (as well as invasable again of coarse will be covered in bandages) doing those mischievous things but then Matthew said he has never or he is glad (maybe the never) had a friend like griffin; griffin asked “friend…?“and Matthew responds yes because he’s been doing this for so long and most other ponies are just acquaintances or only needs them for help for that one time or that he mostly tries to survive since (again) it’s hard to find a job and (i guess) if he gets one there could be an accident and he can’t work or worried about loosing a limb and he can’t support his family but now he travels around still trying to help himself and (i was thinking there was a tradity in his family but i guess there in some building with others who  can’t get a job) his family who are at a workhouse or something simaler so maybe they can get out of there but now seeing how good it is and how fun it is working with griffin and how helpful he has been he is glad to call griffin a friend griffin surprised by this but says “thank yo “ in a confused way but soon grows to enjoy that his assistant is also his friend.  later on griffin looking around seeing and think about what he should do but then goes to the museum where Matthew saw Adam and then he saw Adam and thought he can cause trouble if he brought the monster back to life so he ask Matthew if they can get the monster an explains (maybe if they can use it to mess with others or to still get back at those ponies who hurt him and Matthew also maybe it could help them with carrying stuff (logically griffin would ask Matthew what would he do to those pony’s belongings or where ever they live if he got the chance Matthew would steal the stuff or destroy there place so griffin says that if they brought the monster to life it can do those things and they’ll try to drag it out of there as well as so they can carry stuff as well as the monster too plus it would be a little bit easier for them) Matthew thought he thought the pros and cons but he will help so they got Adam and brought him st life and well i already said it what happened in two artworks so you get the point 

in all Matthew is indeed a nice guy he is griffin’s first true friend and tries to help his family and if you are wondering why didn’t he just get a job anyways well like i said he does not want to loose any part of him because they can’t pay for medical needs also most likely i was thinking that his father is just not around ether left or died (maybe left) so so it’s only him and his mother  and they where found (when Matthew got a bit older) the had to go t a work house Matthew did not like this so he found his  mom told her that he will leave but will try to find a way out of this and  left and if you wondering if he found a way to succeed and help his mom well he did as soon as griffin, Jekyll, Hyde and the others (including Elizabeth) got together and all of them help idk Dracula would but oh well

so that is Mathew another long story but i like how it turned out

no then i will do the comic but we still have two more pictures of characters and what they do  which is Jekyll and Hyde  first will be  Hyde because soon you get to see his full face though not the way he will end up looking  yet but he will and then Jekyll