Two other important dialogues, the "Symposium" and the "Phaedrus", are linked to the main storyline by characters. In the "Apology", Socrates says Aristophanes slandered him in a comic play, and blames him for causing his bad reputation, and ultimately, his death. In the "Symposium", the two of them are drinking together with other friends. The character Phaedrus is linked to the main story line by character (Phaedrus is also a participant in the "Symposium" and the "Protagoras") and by theme (the philosopher as divine emissary, etc.) The "Protagoras" is also strongly linked to the "Symposium" by characters: all of the formal speakers at the "Symposium" (with the exception of Aristophanes) are present at the home of Callias in that dialogue. Charmides and his guardian Critias are present for the discussion in the "Protagoras". Examples of characters crossing between dialogues can be further multiplied. The "Protagoras" contains the largest gathering of Socratic associates.