From right to left:
The eumaniraptor trio consists of Ostrom the Deinonychus antirrhopus, Savape the Archaeopteryx lithographica, and Zahavi the Jinfengopteryx elegans.
Ostrom - Ostrom's main funtion is to explain things and otherwise talk to the audience (breaking the fourth wall). I guess he can be counted as the most normal character in the whole comic as he is frequently dismayed by the actions of other characters.
Savape - She likes to kill things. That's all. Oh, and stand on Ostrom's head. She's not half bad at those things, either. As I once explained, I formed her name by sticking vowels between SVP, which stands for the Society of Vertebrate Paleontology and should be pronounced "suh-vay-pee".
Zahavi - Zahavi's job is to provide props (mallets, TVs, volcanoes, etc.) and do weird things in the background like levitate and instantly fossilize himself. He's been severely underused, so I think I may feature him more in the future, because in many of the comic strips so far all he does is stand around. He is the only main character without a particularly meaningful name. I couldn't think of a name for him at first, and while I was reading The Selfish Gene by Dr. Richard Dawkins I came across a biologist named Amotz Zahavi. I just thought his name sounded good, so I used it for my Jinfengopteryx elegans character. I'm not sure how the original Zahavi is supposed to be pronounced, but my character's name should be "zuh-hay-vee".
Dinky and the Skull
While most elements in Raptormaniacs are only loosely based on Animaniacs, if at all, Dinky and the Skull are reasonably close to Pinky and the Brain.
Skull - Skull is a cast of the skull of Tsaagan mangas on display in the Acme Museum. He's supposedly quite knowledgeable and intelligent. (Never mind his lack of an actual brain.) He's not as ambitious as Brain, he just wants to take over the museum, making maniraptors the star attractions. The sign under his display stand can be opened to reveal his hammerspace. While he can't move from place to place, he can swivel on his axis in order to talk to those around him.
Dinky - Dinky is a Passer domesticus who flew into the museum by mistake and has failed to get out ever since. Skull considers him "mindless", but more often than not he isn't the sole blame for the failure of Skull's plans. Nonetheless, Skull still believes he's useful to have around, mainly because he more or less compensates for Skull's lack of mobility.
Remex and Ebeff
Remex the Caudipteryx zoui and Ebeff the Therizinosaurus cheloniformis don't really have a basis from the original Animaniacs. Truth be told, I made them up mainly so that there would be some non eumaniraptors.
Remex - The phylogenetically-correct Caudipteryx zoui. He always stays up to date on paleo news (at least insofar as I do). While he finds constantly having to correct Ebeff irksome, it's useful to have someone with big claws around.
Ebeff - While he tries to stay on top of paleo news, he's often misled by studies that are out of date or flat wrong. For example, he hangs around Remex for the reason that they're both "enigmosaurs". His name, as some have noticed, is derived from EBFF (Elongated Broad Filamentous Feather), which is a bristly integument that therizinosaurs (large-clawed dinosaurs, or, more creatively, sloth dinosaurs) had.