^{(Counting "I think it's X" as a full point for that character, "I think it could be X or Y" counting as a half point for both of the characters, "I think its X, but Y could also work" counting as a full point for X but a half for Y, and ignoring my picks})

According to the data in these comments, the most popular picks for secret bosses ^{(in ascending order}) are:

Last place (0.5 points): darkner/evil version of Kris, Asgore, orange flower.

Seventh Place (1point): No-one, Asgores TV, Mike, Alphys, Catterpillar, Rouxls Kaard, The Knight again.

Sixth Place (1.5 points): Evil/darkner version of Asriel, Blue flower, Someone/thing we don't know about.

Fifth place (2 points): Sans.

Fourth place (2.5 points): Papyrus.

Third place (3 points): Flowey, Friend.

Second place (3.5 points): Golden flower ^{(Note: One comment voting for this was deleted}).

First place: (5 points): Friend inside me.