This article is ambiguously canon This article covers a subject originating in a fully-licenced source but with unconfirmed status as part of SG1/SGA/SGU canon and continuity.

Plyko
Biographical information
Race	Plyko's race
Home planet	Red moon of Krall
Gender	Male
Political information
Allegiances	Vala's team
Out of universe information
Appearances	Stargate: Vala Mal Doran

[Source]

Plyko is an intergalactic smuggler and technopathic starship pilot related to Vala Mal Doran.

Plyko had worked with Vala in the past,and while residing on the planet Charos he and other smugglers where contacted by Vala to form a team and retrieve valuable data. (SG1: "Vala Mal Doran 1")

Later on, a more aggressive Plyko wielding an Ankh weapon aids SG-1 solve the Strayka problem on Glaudyk. (SG1: "Vala Mal Doran 2")