Dr Jekyll

NormalUnderwater

Dr Jekyll
Released								9 August 2005 (Update)
Also called								Mr Hyde
Members								Yes
Race								Human
Location								Gielinor
Gender								Male
Options								Talk-to, Dismiss
Examine								He looks relieved.
Advanced data
NPC ID								307
Link								MOID

Dr Jekyll, previously Jekyll and Hyde, is a random event NPC that appears and urgently asks the player for help making a potion. If talked to, he requests a cleaned herb of the player. If the player has the requested herb in their inventory and offers it to him, he will give them a potion in return. If the player refuses to give the requested herb, or if they are not carrying any herbs, he will give the player a Strength potion(2) before disappearing. If the player has multiple herbs, Dr Jekyll will request the highest level herb.^[1]

Dr Jekyll is one of three events which will follow players into banks and will not despawn at banks, alongside Count Check and the Genie.

Before the Optional Randoms & Goblins update, if ignored, Dr Jekyll would turn into Mr Hyde (level 14–159, depending on the player's Combat level) and attack the player with Melee. If killed, he would drop a potion or an empty vial. Killing him could sometimes be more profitable than giving him a herb, as he could possibly drop a Super restore potion(4).

• 
  Mr Hyde
• 
  Dr Jekyll transforms into Mr Hyde.

The list of potions Dr Jekyll gives for each herb:

Herb	Potion	Profit
No herb given	Strength potion(2)	47
Guam leaf	Strength potion(4)	−238
Marrentill	Antipoison(4)	133
Tarromin	Attack potion(4)	−285
Harralander	Restore potion(4)	−343
Ranarr weed	Energy potion(4)	−5,804
Toadflax	Defence potion(4)	−1,670
Irit leaf	Agility potion(4)	−1,114
Avantoe	Super attack(4)	63
Kwuarm	Super energy(4)	456
Snapdragon	Super strength(4)	−4,206
Cadantine	Super restore(4)	7,733
Lantadyme	Super defence(4)	1,879
Dwarf weed	Magic potion(4)	−1,229
Torstol	Stamina potion(4)	409

• Dr Jekyll is a direct reference to the mystery novel Strange Case of Dr Jekyll and Mr Hyde by Robert Louis Stevenson. It is about a doctor who created a potion which transformed him into a manifestation of his repressed, evil side, whom he called Mr Hyde. This transformation allowed him to go out at night and do whatever he wanted without tarnishing his personal reputation as Dr Jekyll.
• If a player receives this random event underwater, Jekyll will be seen wearing diving gear.