Altovar
Altovar was a Lethean criminal.

In 2371, he visited Deep Space 9, and broke into the infirmary. He tried to steal several hundred milliliters of bio-mimetic gel, when Dr. Julian Bashir walked in on him. He telepathically attacked him, leaving Bashir in a coma for several hours. 

During the coma, Bashir dreamed that Altovar was hunting him and murdering the senior staff, who represented different aspects of his personality. 

In reality, Altovar had triggered a security alarm and was arrested by Odo soon after leaving the infirmary. ()

Background information 
Altovar was played by Victor Rivers. 

According to the , Altovar was pronounced as "AL-toe-var". The script of  specifies that Soto should look like Altovar.

His costume was sold off on the It's A Wrap! sale and auction on eBay but named as a Kazon/Illyrian costume.  It was later sold again through eBay and the current owner found several name tags in this costume, parts worn by Tom Morga, Eric Hunter, Ken Wood, Mick T., Mickey Cassidy, Scott Hill, Jon Wright, David Winburn, and Tom Miller throughout Deep Space Nine, Voyager, and Enterprise.

de:Altovar
fr:Altovar
Letheans