Absolute Trust is probably one of the best stories I've seen with an OC insert, and it's use of the classic fanfic idea of the character who knows the show is done exceptionally well.
Alec's character is entertaining and manages to avoid becoming flat or a Mary Sue, being snarky, mischievous, and ruthless, but still liable to oversights or his own emotions.
The use of Alec's information is also handled extremely well, especially since the Gaang knows about it right away and he's careful with how he uses it. That being said, he's still willing to change things, and sometimes his actions may cause changes he was completely unaware of. It overall creates a story that nicely lines up with canon and actively uses what canon has given in terms of plot points while also creating enough changes, especially later on, that keep things interesting.
Fanfic Isekai Fanfiction Done Right
Absolute Trust is probably one of the best stories I've seen with an OC insert, and it's use of the classic fanfic idea of the character who knows the show is done exceptionally well.
Alec's character is entertaining and manages to avoid becoming flat or a Mary Sue, being snarky, mischievous, and ruthless, but still liable to oversights or his own emotions.
The use of Alec's information is also handled extremely well, especially since the Gaang knows about it right away and he's careful with how he uses it. That being said, he's still willing to change things, and sometimes his actions may cause changes he was completely unaware of. It overall creates a story that nicely lines up with canon and actively uses what canon has given in terms of plot points while also creating enough changes, especially later on, that keep things interesting.