Religion: not determined yet
Name: Mr. Costello
Classification:
supporting character
Publisher(s): 
First Appearance: The Avengers (vol. 1) #270 (Aug. 1986): "Wild in the Streets!"
Creators: Roger Stern, John Buscema, Tom Palmer
Number of Appearances: 2
Occupation: attorney
Gender: male
Note: defended Namor against New York's civil suit
The Avengers (vol. 1) #270 (Aug. 1986): "Wild in the Streets!"
Suggested links for further research about this character:
- http://www.comicboards.com/marvelguide/c3.html
- http://marvel.wikia.com/Avengers_Vol_1_286