Those Whose Past Is Immortal was created in 2000.
Actually, irregular verbs do not follow a specific pattern in forming their past and past participle tenses, so they do not necessarily end in -d or -ed. Instead, irregular verbs have unique forms that do not follow the standard rules for verb conjugation.
Created is the past tense of the verb create.
Past Brothers was created in 1929.
baptism is a noun but the verb is baptise whose past participle is baptised
Return to the Past was created in 2008.
A Peep into the Past was created in 1923.
The Simple Past was created in 1954.
A Fugitive from the Past was created in 1965.
Past Continuous was created in 1977.
On the Impossible Past was created in 2011.
PAST Foundation was created in 2000.
Forward into the Past was created in 1976.