Twenty Fifth Bam: Rak initially met Baam as "his prey", swearing to hunt him because of the power he sensed from the Black March. Afterwards, he became more friendly, but still keeps up the friendly pretence that he intends to hunt him. Later in Part II, the level of care and affection Rak has come to develop for Baam is apparent when they finally reunite and Rak confirms that Viole's secret identity is Baam. Rak sheds tears and embraces him, expressing his joy at Baam being truly alive and that he will never let him go nor forgive those who put Baam through such hardships. When Baam asked Rak to leave before his team saw them, Rak was determined to stay until Androssi finally pulled him away.
Khun Aguero Agnis: Rak views Koon and Baam as his underlings; but he's also one of the few people to genuinely understand Koon, telling him that his heart is "pitch black" and that he's only good for scamming people. Despite this, he trusts Koon's planning ability completely. Rak's thoughts on Koon are much different and more genuine later in Part II. It is clear that Koon and Rak are of the closest of friends and this sentiment is shown as Rak states that he was happy at the thought of Baam being alive and getting to meet Koon once again. Rak wanted him and his two turtles to climb the Tower together again like old times.
Akryung: Rak had a somewhat one-sided rivalry with Akryang on the Floor of Test, which drove him to succeed at the spear-thrower test and bypass the Hide-and-Seek game. He made some effort to befriend the hulking giant, but Akryung seems to have completely ignored him.
Parakewl: He was climbing the Tower with Parakewl up to the 30th Floor. Rak considered him useless most of the time, especially after he interfered in the battle between Anak and Ran. He somewhat manages to redeem himself by distracting Baam.