Only Riptor Available while Offline?

Hey soooo I don’t have a good internet connection and since I don’t want to have to deal with the hassle this gives me, I usually turn my internet completely off to avoid the instability. However when I try to play the game, only Riptor is available to play (and Killgore but hes a paid character dlc). Everyone else is greyed out. Is there any way to get around this? Have people been able to play all characters offline on PC? (I didn’t own KI on Xbox One). If someone has found a solution, can you tell me what it is? Thanks

If you like the game then support the developers, this is a good way
to get you account banned.

Have you bought any other characters or seasons?

What characters are you supposed to actually own?