As soon as Atrus heard motion of any sort, he quickly downed the previously overfilled invisibility potion in hopes of not being caught by who or whatever was entering the house that belonged to Old Autry. Surprisingly enough, the potion seemed to have taken a quick effect since when he looked down at himself nothing was there. He hid away from the door only to seethe the door was pushed with some force to be opened. Hearing a voice that he knew wouldn't be evil, he moved from his hiding place and quietly moved over to the door and the person who had just entered his master's home.

He was thankful that he wasn't the only person in existence any more, but he had so many questions for the person who had just arrived. He was still invisible, so Atrus wasn't sure about speaking up and seeming like the house was haunted or anything. As fun as it might be he didn't want to scar off the only other being that he knew was still there in this world with him. Another though had planned to cross his mind until something had happened that he didn't expect. Atrus let out a cry of pain and dropped to his knees, his entire body suddenly burned with pain and the only reason that he could think to be the reason was the potion. Maybe because it affected all of his body and the transformation back to being visible was a painful one, but he needed to study more about it so it wouldn't happen again. The pain quickly increased as his visibility returned but suddenly stopped without reason. 

Atrus panted heavily as he looked around the area, the burning effect of the potion wasn't something he could have predicted, and in all honesty he was glad that he found that instead of using the same potion mix out in the field and having that happen to him. Looking at the person who had entered the house not to long ago, Atrus got up slowly and looked at him, nodded just slightly and extending out a hand. "I'm Atrus. Sorry about... all of that, but I didn't know if you were a friend or not, and I didn't know the side effect of that potion. There could be more for all I know."