Lord Tedd is first depicted as an angry, violent person, smashing a table beneath his fist in reaction to the destruction of the Goo, though his demeanor is quite different in a later appearance. Nioi remarks to Grace that Lord Tedd is not as bad as the main universe characters believe, and she believes that the influence of General Shade Tail is corrupting him.
Lord Tedd first influences the Main Universe by planting a demon nucleus in the Goo and ordering it to attack Tedd. This attempt is unsuccessful, as the Goo is destroyed by Ellen without even encountering Tedd in its improved state. He silently received a message confirming the failure of his servant; however, he does break a table upon receiving the news.
The next appearance of Lord Tedd is markedly different than his first, showing him to be calm and somewhat caring in regards to Nioi, looking to give her a book he thought she would like. His past might be hinted at in the Shadows After Dark story arc, when Tedd dreams about a grave and transforms into Lord Tedd. He is confronted by a tall shadowy figure, which he reacts fearfully to, attacking it with a blast from his arm.
Another reference to Lord Tedd is when Elliot remembers him when confronting Bloodgrem. Edward Verres quickly dismiss the idea of any connection between those two based on information he doesn't elaborate on, and hints that he has been having Lord Tedd monitored due to his assassination attempt on the main characters' reality's Tedd. 
Very little is known about Lord Tedd's abilities; In Tedd's dream, he is seen firing a blast from his gauntlet, as previously mentioned. This dream likely gave Tedd idea to build his Gauntlet later, but we have no idea how prophetic that dream was.
It is probable that his abilities are similar to Tedd's, in which case he would probably have access to Tedd's anti-magical abilities and be a skilled scientist capable of incorporating magic into his devices. The latter at least seems to be true from what little the audience has seen of his abilities so far.
- ↑ EGS Main Story Comic for 2003-01-06 ("Grace The Ghost")
- ↑ EGS Main Story Comic for 2003-11-07 ("More Complications")
- ↑ EGS Main Story Comic for 2003-11-10 ("Nioi Arrives Via Portal to the Main Universe")
- ↑ EGS Main Story Comic for 2002-11-09 ("A Needle In A Haystack")
- ↑ EGS Main Story Comic for 2004-08-24 ("Tedd's Dream, Part I")
- ↑ EGS Main Story Comic for 2008-08-01 ("Perhaps They're Cousins?")
- ↑ EGS Main Story Comic for 2008-09-01 ("Let's Keep This as Simple as Possible, Folks")