Who is Kaspal Kaspalov from Forward the Foundation and what is their importance?

Kaspal Kaspalov is an old Joranumite. Kaspalov frequently questions and challenges Joranum's right-hand man and successor, Gambol Deen Namarti, as they reconstitute the movement in Wye Sector. Kaspalov denies that Joranum had made mistakes and resents being considered an old fool. The three other members of the inner circle are willing to follow Namarti as Chief, so Kaspalov goes along, tries to be reconciliatory, but insists on having his say, particularly about the wisdom and morality of Namarti's policy of fostering and exploiting breakdowns in the infrastructure around Trantor to foment popular discontent. The discovery of Kaspalov's knifed body in Wye Sector and his last word, "Chief," leads Hari Seldon to send his son Raych undercover into Wye to investigate signs of conspiracy and rebellion.