Gara had nightmares after Chara's death haunting him for the longest time before they stopped when Frisk saved him.Note: I know it wasn't his fault but his psyche was enough damaged and he though about those for so long he believed it. Hating humans and hating himself. All that made enormous impact on his life and shattered his mind. With time he tried to patch the fragmented pieces together... After Frisk (and the readers ^^) saved him, the nightmares lessened. He still has them from time to time but it's not bad like it was in the past: waking up screaming and crying most of the time. Now although he sees the dream it is barely recognizable and sees most of the time blurs. He doesn't forget completely his nightmares or the blame...but the pain is much duller than from the beginning. Chara doesn't speak unknown language, Gara just has this confusion in his head: he vividly remembers the blood and the blame he takes on himself, but at the same time his brain tries to suppress the memories of it all creating a trauma. Gara sees all and knows what is going on, he hears them talking but doesn't understand the words each of them are saying. For him it is now an unknown language where even his own voice in the dreams sounds foreign. Gara also doesn't know how Chara died, he saw her already dead with blood on the ground and everywhere...that is just his imagination how humans could have killed her... For those who are new to this page and Gara just a quick mention: Under the mask, Gara has no mouth, half of his face is missing. In pre-Undertale setting (AKA Chara fell into MT.Ebott.) Gara had his whole face on (he was a normal skeleton monster). However when Chara died he stopped caring for himself and cried so much the salt of the tears weakened his chin and it broke...also because of his genes. He is half-doll/half skeleton so he has 10% weaker bones so while unattended his bones/body can suffer a lot. His face was missing since then, that was the reason of wearing also a mask and also not to be recognized by anyone who ever knew him. In Undertale game and Circus AU plot (Post-Undertale) his face is still missing but he gets by.Chara (All the time)Gara (at the bottom) screaming.(continuing his screaming when he wakes us:!)by Toby Foxby me