After the first outro, Chara says some words and then shouts "SINCE WERE YOU THE ONE IN CONTROL?!" Then brown liquid pours out of it's eyes as flashing lights occur, and as Chara laughs, (not audible) Chara is getting closer and closer to the viewer until a slap.
In the second outro, at some words, the song that is being played is glitched for about 5 seconds. This is also happening to the picture. Then it cuts to black and Gaster says creepily to the viewer, "revert clock is ticking".
Chara, a seemingly young child with blush, may creep out some viewers, even when it's eyes widen, and it's smile grows big and long at the same time. (It even scares Sr Pelo in the movie!)