Avengers concept art featuring Thor & Loki. Avengers concept art featuring Thor & Loki. Avengers concept art featuring Thor & Loki. Avengers concept art featuring Thor & Loki. Avengers concept art featuring Thor & Loki. Avengers concept art featuring Thor & Loki. Avengers concept art featuring Thor & Loki. Avengers concept art featuring Thor & Loki. Avengers concept art featuring Thor & Loki. Avengers concept art featuring Thor & Loki.