Sonic the Hedgehog; Eggman’s relationship with the blue blur is questionable at best. At times he can talk with Sonic without as much as a single threat or rude remark. Although the rivalry between the two can be playful at times, Robotnik’s “playful” rivalry with Sonic has turned to outright malice commonly. Views Sonic as a primary threat to his plans at all given times.

Miles “Tails” Prower; Eggman admires Tail’s skill with machines, but rarely views Tails as anything more then a minor annoyance compared to his blue comrade.

Orbot SA-55; As one of the doctor’s creations, Eggman has a on/off friendship with the small robot. Orbot’s tendencies to point out the failure in Eggman’s plans often annoys him greatly, but despite this, Robotnik tends to have a borderline positive outlook on Orbot. Eggman also loves Orbot’s cooking skills.

Cubot; Often a greater annoyance then Orbot. Not only is he annoying, he’s incredibly stupid.

Shadow the Hedgehog; There isn’t much love between the two. Eggman see’s Shadow as a possible ally at most given times, but has grown used to Shadow’s shifting allegiances to the point of skepticism. ((SO TSUN))

Gerald Robotnik; The man that inspired Eggman to go along the path of science. Ivo looked highly upon his grandfather, to the point where he often times idolized him. It’s because of this Eggman despises the government, seeing them as corrupt thanks to the wrongful execution of his last remaining family.

Metal Sonic; Eggman’s second attempt at his prized Metal Sonic concept. The Doctor has thus far always been on good terms with his faithful recreation, and he hopes to keep it that way to prevent another nasty betrayal.

Dr. Finitevus; The albino echidna is one of the very few people Eggman has grown to trust. He considers his friendship close, and often goes out of his own way to ensure he doesn’t upset the albino echidna.

(More will be added later.)