Who

Who is the childhood friend of Ladd Russo and one of the White Suits aboard The Flying Pussyfoot in 1931. He becomes Fred's assistant after the massacre aboard the train, making him the only member of the White Suits (the Russos) who was not killed or arrested following the train's arrival at Grand Central Station.

Personality
According to the man himself, he is primarily a coward and terrified of death. His biggest regret was not helping Ladd cope with the loss of his friend and lover Leila, which Who thinks might account for how Ladd is today.

1931 The Grand Punk Railroad
Who is first introduced as a part of Ladd Russo's followers aboard the Flying Pussyfoot. Later in the novel, Who is wounded during a scuffle with the Lemures and the mysterious Rail Tracer and meets The Grey Magician (Dr. Fred). After deciding that he had enough of the violence and is happy to be alive, he turns a new leaf and abandons Ladd's gang when the storyline is over, becoming Fred's assistant nurse.

1931 Another Junk Railroad - Express Episode
Who looks after Jacuzzi Splot (who is recovering from his injuries). Jacuzzi guesses that Who is a part of the Russo family. Despite the honest affiliation that Who has with Ladd, he corrects Jacuzzi, replying that he is not a part of the Russo family and does not intend to sell Jacuzzi out to the Chicago based crime family. Jacuzzi wants to learn more about Who, and the former gangster recalls a past occurrence in which he was bullied as a child and Leila and Ladd would help him overcome his cowardice in order to get back at his bullies. He also recalls Leila and Ladd's developing relationship and subsequent intended elopement.

The day after Leila's death,, Ladd's homicidal tendencies blossomed, and he became the man Jacuzzi and Who know today. Who vehemently denies that Ladd killed her, concluding that if Ladd had indeed killed Leila, then Who and the others could have died easily on The Flying Pussyfoot. He dismisses Ladd's personality as merely a coping mechanism to overcome his grievances of losing Leila.