Basically, Dadster refers to gaster being the dad of sans and papyrus. Although we don't know a lot about faster, we can tell that from the games - he's somehow connected to the skelebros. Specifically, people in the fandom making him the dad of the bros. Which could make sense with his design, although this isn't his cannon design - so maybe he isn't because his real design is quite different. Heck, I've seen people even headcannon him as being the 3rd brother of the skelebros.,tho-dadster is the most popular one. Personally, I like the idea of him being related to them. Mostly due to growing up on comic dubs about them

Dadster when i was first learning about undertale was something i thought was canon. i still love it even though it isnt. it's just so cute and has angst potential
Well, there is a au where gaster created the skelebros. And treated as experiments - if you want angst. I personally don't like that au
i know. handplates and a few others.
Handplates is one of my favorite comics to date. Straight peak all the way through
.not my favorite au. its good writing and story telling. but it also makes me wanna sob in the corner and kill gaster. so....ehhh?
Oh, you've seen them... What's your opinion on them
dadster stocks are falling man you gotta invest in broster
Dadster for life 🤟
I believe in absent fathster
He ain't absent , he's trying to find the milk.
Ah yes, the fabulous milk store located in the depths
Gaster being like that kinda explains why his son Papyrus was buying clothes at the soup store
He ain't absent, his....
Always watching
i’m watching you, Wazowski, always watching.
hes green and inbetween
Whoever drew the art deserves a lifetime supply of coffee, 10/10
@NexusMonstrum did this, check them out
If done right, its a good au
Cute but honestly I prefer gaster being the middle brother
ive seen eldest brother but middle brother gaster is a new one
edit: i then immediately saw two other comments saying the same thing. maybe ive just been living under a rock
Or maybe Gaster was their grandfather, like grandpa Semi was
OH MY GOD IT'S BABY ME
Is that you, the magnificent Papyrus
Yes, it is me!
Have you brought your scrumptious SPAGHETTI
YES!!
Cute, have read my fair share of comics and fanfics about it
The idea of a skeleton baby is adorable but a baby's skeleton isn't. Interesting.
I think it's alright. I find it bittersweet, and I know Handplates was very popular but I only read the first few pages of it but I did read the Spamton & Addison comic (Defragmentation) that the same creator (Zarla) had.
It’s fine ig
Pretty interesting fannon wise but I wouldn't care if I learned somehow it was cannon because I do not care about gaster
I'm personally way more subscribed to dad Gaster than third bro Gaster. He just has the vibes of someone way older than the other two to feel right as a bro...
I personally hate it but if others like it then its not really harming anyone. I honestly thought the skeleton species were font based and Gaster just added to the world in that way for me, but if he's directly related then it just makes the world seem so much smaller (only one family of skeletons just seems weird) theres no "wrong interpretation" just not my taist.
only one family of boss monsters seems weird too
and ghost monsters
and deer monsters
and snow dragon monsters
and turtle monsters
I could keep going
Dadster is a really fun concept i'd say, despite what we know of the character concept writings probably hinting at him being the middle brother.
I'd still think a similar idea for Dadster could work even after he's revealed to be a middle brother. If Grandpa Semi was considered at some point, then some other font skeleton could be made to represent their father. Maybe a more serious font, like Garamond, or Helvetica.
On this topic, i'd like to propose that Sans, WingDings Aster and Papyrus' mother is called Curlz, and she's a sweet heart.
I neither support nor hate the theory except for the fact that Toby never actually confirmed that he was Gaster
I know you're going to throw tomatoes at me, but I don't think Gaster is their father or related to them
I don't even think he's a skeleton, he could be something else, and Toby is only making us think he's a skeleton because both brothers are also named after a font
Fair, but he does have a connection to the skelebros