-S
Mmmm, by appearance, do you just mean never drawn? He HAS appeared in
the strip, at least inasmuch as Miss Othmar or Linus' blanket-hating
grandmother has. CB did meet him once, and got him to autograph his
baseball.
JR
Shlabotnik. He was mentioned in the original posted list. Although
adults are never drawn in the strip, Charlie Brown did talk to him at
least once, in the series when he catches a foul ball and has Joe
autograph it. Linus also talks to Joe on the phone once when Joe calls
late at night after the (eventually cancelled) honorary dinner for
Charlie Brown.