Sir Jerro must be killed during the Underground Pass quest in order to collect the blue paladin's badge. He can be killed after the quest is complete. If the player talks to him before they have killed him, he will give them some supplies. If the player has killed him and tries to talk to him, he will attack the player.
Item Quantity Rarity GE market price Grimy marrentill 1 Common 14 Grimy guam leaf 1 Common 13 Grimy harralander 1 Uncommon 654 Grimy tarromin 1 Uncommon 138 Grimy dwarf weed 1 Rare 468 Grimy irit leaf 1 Rare 870 Grimy ranarr weed 1 Rare 8,568 Grimy lantadyme 1 Very rare 1,468 Grimy cadantine 1 Very rare 1,576 Grimy kwuarm 1 Very rare 1,282 Grimy avantoe 1 Rare 1,828
Armour, weapons and ammunition
Item Quantity Rarity GE market price Steel sword 1 Common 66 Steel longsword 1 Uncommon 97 Steel full helm 1 Uncommon 129 Water rune 30 Common 150 Blood rune 1 Rare 371
Item Quantity Rarity GE market price Coins 2; 8; 15; 48; 120 Common Not sold Iron bar 1 Common 186 Mithril bar 1 Rare 710 Steel bar 1 Uncommon 511 Clue scroll (medium) 1 Rare Not sold
- If you try to talk to him after completing Underground Pass, he will recognise you and exclaim, "You again... die Zamorakian scum!"